Revert of bluetooth: Move testing IPC from BluetoothDispatcher to BlinkTestRunner (patchset #2 id:250001 of https://codereview.chromium.org/1125133005/)

Reason for revert:
Broke a bunch of Layout Tests. Here's an example: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=virtual%2Fstable%2Fanimations-unprefixed%2Fanimation-events-prefixed-04.html

STDERR: ==28151==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000050 (pc 0x000006a00bd0 bp 0x7fff171be890 sp 0x7fff171be880 T0)
STDERR:     #0 0x6a00bcf in content::BluetoothDispatcherHost::SetBluetoothAdapterForTesting(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) content/browser/bluetooth/bluetooth_dispatcher_host.cc:63:43
STDERR:     #1 0x4e5d9d in OnSetBluetoothAdapter content/shell/browser/layout_test/layout_test_message_filter.cc:171:3
STDERR:     #2 0x4e5d9d in DispatchToMethodImpl<content::LayoutTestMessageFilter, void (content::LayoutTestMessageFilter::*)(const std::__1::basic_string<char> &), std::__1::basic_string<char> , 0> base/tuple.h:252:0

Original issue's description:
> bluetooth: Move testing IPC from BluetoothDispatcher to BlinkTestRunner
>
> This patch removes the testing IPC from BluetoothDispatcher and
> BluetoothDispatcherHost.
>
> This patch also changes the way the mock BluetoothAdapter was set in
> BluetoothDispatcherHost. Instead of receiving an IPC to set the adapter,
> BluetoothDispatcherHost exposes a function to directly set the adapter.
> This function is used by LayoutTestSupport to set the adapter.
>
> Mock adapter flow before:
> BlinkTestRunner -> LayoutTestSupport -> BluetoothDispatcher --IPC-->
> BluetoothDispatcherHost (Mock constructed here)
>
> After:
> BlinkTestRunner --IPC--> LayoutTestMessages(Mock constructed here) ->
> LayoutTestSupport -> BluetoothDispatcherHost
>
> This is the first of two patches to remove testing from BluetoothDispatcher
> and BluetoothDispatcherHost:
>
>  [1] This patch.
>  [2] http://crrev.com/1132943002
>
> BUG=436284
>
> Committed: https://crrev.com/3f7142d0acf5e930743cbe5d754084c464ac3c85
> Cr-Commit-Position: refs/heads/master@{#330647}

TBR=jam@chromium.org,scheib@chromium.org,tsepez@chromium.org,ortuno@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=436284

Review URL: https://codereview.chromium.org/1142303002

Cr-Commit-Position: refs/heads/master@{#330653}

16 files changed, 53 insertions, 58 deletions

diff --git a/content/browser/bluetooth/bluetooth_dispatcher_host.cc b/content/browser/bluetooth/bluetooth_dispatcher_host.cc
index 6212690..b440cdb 100644
--- a/content/browser/bluetooth/bluetooth_dispatcher_host.cc
+++ b/content/browser/bluetooth/bluetooth_dispatcher_host.cc
@@ -50,28 +50,13 @@ bool BluetoothDispatcherHost::OnMessageReceived(const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(BluetoothDispatcherHost, message)
   IPC_MESSAGE_HANDLER(BluetoothHostMsg_RequestDevice, OnRequestDevice)
   IPC_MESSAGE_HANDLER(BluetoothHostMsg_ConnectGATT, OnConnectGATT)
+  IPC_MESSAGE_HANDLER(BluetoothHostMsg_SetBluetoothMockDataSetForTesting,
+                      OnSetBluetoothMockDataSetForTesting)
   IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
-void BluetoothDispatcherHost::SetBluetoothAdapterForTesting(
-    const std::string& name) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  if (name == "RejectRequestDevice_NotFoundError") {
-    bluetooth_mock_data_set_ = MockData::REJECT;
-    bluetooth_request_device_reject_type_ = BluetoothError::NOT_FOUND;
-  } else if (name == "RejectRequestDevice_SecurityError") {
-    bluetooth_mock_data_set_ = MockData::REJECT;
-    bluetooth_request_device_reject_type_ = BluetoothError::SECURITY;
-  } else if (name == "ResolveRequestDevice_Empty" ||  // TODO(scheib): Remove.
-             name == "Single Empty Device") {
-    bluetooth_mock_data_set_ = MockData::RESOLVE;
-  } else {
-    bluetooth_mock_data_set_ = MockData::NOT_MOCKING;
-  }
-}
-
 BluetoothDispatcherHost::~BluetoothDispatcherHost() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   // Clear adapter, releasing observer references.
@@ -150,6 +135,23 @@ void BluetoothDispatcherHost::OnConnectGATT(
                                            device_instance_id));
 }
 
+void BluetoothDispatcherHost::OnSetBluetoothMockDataSetForTesting(
+    const std::string& name) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  if (name == "RejectRequestDevice_NotFoundError") {
+    bluetooth_mock_data_set_ = MockData::REJECT;
+    bluetooth_request_device_reject_type_ = BluetoothError::NOT_FOUND;
+  } else if (name == "RejectRequestDevice_SecurityError") {
+    bluetooth_mock_data_set_ = MockData::REJECT;
+    bluetooth_request_device_reject_type_ = BluetoothError::SECURITY;
+  } else if (name == "ResolveRequestDevice_Empty" ||  // TODO(scheib): Remove.
+             name == "Single Empty Device") {
+    bluetooth_mock_data_set_ = MockData::RESOLVE;
+  } else {
+    bluetooth_mock_data_set_ = MockData::NOT_MOCKING;
+  }
+}
+
 void BluetoothDispatcherHost::OnDiscoverySessionStarted(
     int thread_id,
     int request_id,
diff --git a/content/browser/bluetooth/bluetooth_dispatcher_host.h b/content/browser/bluetooth/bluetooth_dispatcher_host.h
index 86aca14..1cc27c5 100644
--- a/content/browser/bluetooth/bluetooth_dispatcher_host.h
+++ b/content/browser/bluetooth/bluetooth_dispatcher_host.h
@@ -23,7 +23,7 @@ namespace content {
 // UI Thread Note:
 // BluetoothDispatcherHost is constructed, operates, and destroyed on the UI
 // thread because BluetoothAdapter and related objects live there.
-class CONTENT_EXPORT BluetoothDispatcherHost final
+class BluetoothDispatcherHost final
     : public BrowserMessageFilter,
       public device::BluetoothAdapter::Observer {
  public:
@@ -34,8 +34,6 @@ class CONTENT_EXPORT BluetoothDispatcherHost final
                                 BrowserThread::ID* thread) override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
-  void SetBluetoothAdapterForTesting(const std::string& name);
-
  protected:
   ~BluetoothDispatcherHost() override;
 
@@ -51,6 +49,7 @@ class CONTENT_EXPORT BluetoothDispatcherHost final
   void OnRequestDevice(int thread_id, int request_id);
   void OnConnectGATT(int thread_id, int request_id,
                      const std::string& device_instance_id);
+  void OnSetBluetoothMockDataSetForTesting(const std::string& name);
 
   // Callbacks for BluetoothAdapter::StartDiscoverySession.
   void OnDiscoverySessionStarted(
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 66dfa9c..b364c29 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -933,8 +933,7 @@ void RenderProcessHostImpl::CreateMessageFilters() {
       message_port_message_filter_.get()));
   if (browser_command_line.HasSwitch(
           switches::kEnableExperimentalWebPlatformFeatures)) {
-    bluetooth_dispatcher_host_ = new BluetoothDispatcherHost();
-    AddFilter(bluetooth_dispatcher_host_.get());
+    AddFilter(new BluetoothDispatcherHost());
   }
 }
 
@@ -2461,8 +2460,4 @@ void RenderProcessHostImpl::GetAudioOutputControllers(
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
-BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
-  return bluetooth_dispatcher_host_.get();
-}
-
 }  // namespace content
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index cce983d..d89ed48 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -43,7 +43,6 @@ class ChannelMojoHost;
 
 namespace content {
 class AudioRendererHost;
-class BluetoothDispatcherHost;
 class BrowserCdmManager;
 class BrowserDemuxerAndroid;
 class GpuMessageFilter;
@@ -271,8 +270,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
   void GetAudioOutputControllers(
       const GetAudioOutputControllersCallback& callback) const override;
 
-  BluetoothDispatcherHost* GetBluetoothDispatcherHost();
-
  protected:
   // A proxy for our IPC::Channel that lives on the IO thread (see
   // browser_process.h)
@@ -454,8 +451,6 @@ class CONTENT_EXPORT RenderProcessHostImpl
 
   scoped_refptr<AudioRendererHost> audio_renderer_host_;
 
-  scoped_refptr<BluetoothDispatcherHost> bluetooth_dispatcher_host_;
-
 #if defined(OS_ANDROID)
   scoped_refptr<BrowserDemuxerAndroid> browser_demuxer_android_;
 #endif
diff --git a/content/child/blink_platform_impl.h b/content/child/blink_platform_impl.h
index 9502663..8ca60ea 100644
--- a/content/child/blink_platform_impl.h
+++ b/content/child/blink_platform_impl.h
@@ -174,6 +174,8 @@ class CONTENT_EXPORT BlinkPlatformImpl
   void ResumeSharedTimer();
   virtual void OnStartSharedTimer(base::TimeDelta delay) {}
 
+  WebBluetoothImpl* BluetoothImplForTesting() { return bluetooth_.get(); }
+
   virtual blink::WebString domCodeStringFromEnum(int dom_code);
   virtual int domEnumFromCodeString(const blink::WebString& codeString);
 
diff --git a/content/child/bluetooth/bluetooth_dispatcher.cc b/content/child/bluetooth/bluetooth_dispatcher.cc
index c76c5ef..47d2531 100644
--- a/content/child/bluetooth/bluetooth_dispatcher.cc
+++ b/content/child/bluetooth/bluetooth_dispatcher.cc
@@ -120,6 +120,11 @@ void BluetoothDispatcher::connectGATT(
                                         device_instance_id.utf8()));
 }
 
+void BluetoothDispatcher::SetBluetoothMockDataSetForTesting(
+    const std::string& name) {
+  Send(new BluetoothHostMsg_SetBluetoothMockDataSetForTesting(name));
+}
+
 void BluetoothDispatcher::OnWorkerRunLoopStopped() {
   delete this;
 }
diff --git a/content/child/bluetooth/bluetooth_dispatcher.h b/content/child/bluetooth/bluetooth_dispatcher.h
index 0492a1a..86057d8 100644
--- a/content/child/bluetooth/bluetooth_dispatcher.h
+++ b/content/child/bluetooth/bluetooth_dispatcher.h
@@ -50,6 +50,7 @@ class BluetoothDispatcher : public WorkerTaskRunner::Observer {
   void requestDevice(blink::WebBluetoothRequestDeviceCallbacks* callbacks);
   void connectGATT(const blink::WebString& device_instance_id,
                    blink::WebBluetoothConnectGATTCallbacks* callbacks);
+  void SetBluetoothMockDataSetForTesting(const std::string& name);
 
   // WorkerTaskRunner::Observer implementation.
   void OnWorkerRunLoopStopped() override;
diff --git a/content/child/bluetooth/web_bluetooth_impl.cc b/content/child/bluetooth/web_bluetooth_impl.cc
index 46a08e2..d8b5813 100644
--- a/content/child/bluetooth/web_bluetooth_impl.cc
+++ b/content/child/bluetooth/web_bluetooth_impl.cc
@@ -26,6 +26,11 @@ void WebBluetoothImpl::connectGATT(const blink::WebString& device_instance_id,
   GetDispatcher()->connectGATT(device_instance_id, callbacks);
 }
 
+void WebBluetoothImpl::SetBluetoothMockDataSetForTesting(
+    const std::string& name) {
+  GetDispatcher()->SetBluetoothMockDataSetForTesting(name);
+}
+
 BluetoothDispatcher* WebBluetoothImpl::GetDispatcher() {
   return BluetoothDispatcher::GetOrCreateThreadSpecificInstance(
       thread_safe_sender_.get());
diff --git a/content/child/bluetooth/web_bluetooth_impl.h b/content/child/bluetooth/web_bluetooth_impl.h
index f324e08..11403c0 100644
--- a/content/child/bluetooth/web_bluetooth_impl.h
+++ b/content/child/bluetooth/web_bluetooth_impl.h
@@ -32,6 +32,9 @@ class CONTENT_EXPORT WebBluetoothImpl
   void connectGATT(const blink::WebString& device_instance_id,
       blink::WebBluetoothConnectGATTCallbacks* callbacks) override;
 
+  // Testing interface:
+  void SetBluetoothMockDataSetForTesting(const std::string& name);
+
  private:
   BluetoothDispatcher* GetDispatcher();
 
diff --git a/content/common/bluetooth/bluetooth_messages.h b/content/common/bluetooth/bluetooth_messages.h
index 12da031..dda97d4 100644
--- a/content/common/bluetooth/bluetooth_messages.h
+++ b/content/common/bluetooth/bluetooth_messages.h
@@ -141,3 +141,8 @@ IPC_MESSAGE_CONTROL3(BluetoothHostMsg_ConnectGATT,
                      int /* thread_id */,
                      int /* request_id */,
                      std::string /* device_instance_id */)
+
+// Configures the mock data set in the browser used while under test.
+// TODO(scheib): Disable testing in non-test executables. crbug.com/436284.
+IPC_MESSAGE_CONTROL1(BluetoothHostMsg_SetBluetoothMockDataSetForTesting,
+                     std::string /* name */)
diff --git a/content/public/test/layouttest_support.h b/content/public/test/layouttest_support.h
index c8ec1e5..8e75dfe 100644
--- a/content/public/test/layouttest_support.h
+++ b/content/public/test/layouttest_support.h
@@ -93,8 +93,8 @@ void SetDeviceScaleFactor(RenderView* render_view, float factor);
 // Set the device color profile associated with the profile |name|.
 void SetDeviceColorProfile(RenderView* render_view, const std::string& name);
 
-// Change the bluetooth test adapter while running a layout test.
-void SetBluetoothAdapter(int render_process_id, const std::string& name);
+// Change the bluetooth test data while running a layout test.
+void SetBluetoothMockDataSetForTesting(const std::string& name);
 
 // Enables mock geofencing service while running a layout test.
 // |service_available| indicates if the mock service should mock geofencing
diff --git a/content/shell/browser/layout_test/layout_test_message_filter.cc b/content/shell/browser/layout_test/layout_test_message_filter.cc
index ed8360b..dd09baa 100644
--- a/content/shell/browser/layout_test/layout_test_message_filter.cc
+++ b/content/shell/browser/layout_test/layout_test_message_filter.cc
@@ -8,7 +8,6 @@
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/permission_type.h"
-#include "content/public/test/layouttest_support.h"
 #include "content/shell/browser/layout_test/layout_test_browser_context.h"
 #include "content/shell/browser/layout_test/layout_test_content_browser_client.h"
 #include "content/shell/browser/layout_test/layout_test_notification_manager.h"
@@ -48,8 +47,7 @@ void LayoutTestMessageFilter::OverrideThreadForMessage(
     *thread = BrowserThread::FILE;
   if (message.type() == LayoutTestHostMsg_SimulateWebNotificationClick::ID ||
       message.type() == LayoutTestHostMsg_SetPermission::ID ||
-      message.type() == LayoutTestHostMsg_ResetPermissions::ID ||
-      message.type() == LayoutTestHostMsg_SetBluetoothAdapter::ID)
+      message.type() == LayoutTestHostMsg_ResetPermissions::ID)
     *thread = BrowserThread::UI;
 }
 
@@ -68,8 +66,6 @@ bool LayoutTestMessageFilter::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(LayoutTestHostMsg_DeleteAllCookies, OnDeleteAllCookies)
     IPC_MESSAGE_HANDLER(LayoutTestHostMsg_SetPermission, OnSetPermission)
     IPC_MESSAGE_HANDLER(LayoutTestHostMsg_ResetPermissions, OnResetPermissions)
-    IPC_MESSAGE_HANDLER(LayoutTestHostMsg_SetBluetoothAdapter,
-                        OnSetBluetoothAdapter)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -165,10 +161,4 @@ void LayoutTestMessageFilter::OnResetPermissions() {
       ->ResetPermissions();
 }
 
-void LayoutTestMessageFilter::OnSetBluetoothAdapter(const std::string& name) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  // TODO(ortuno): Create mock adapter here. See http://crrev.com/1132943002
-  SetBluetoothAdapter(render_process_id_, name);
-}
-
 }  // namespace content
diff --git a/content/shell/browser/layout_test/layout_test_message_filter.h b/content/shell/browser/layout_test/layout_test_message_filter.h
index bf437d0..a41f72a 100644
--- a/content/shell/browser/layout_test/layout_test_message_filter.h
+++ b/content/shell/browser/layout_test/layout_test_message_filter.h
@@ -64,7 +64,6 @@ class LayoutTestMessageFilter : public BrowserMessageFilter {
                        const GURL& origin,
                        const GURL& embedding_origin);
   void OnResetPermissions();
-  void OnSetBluetoothAdapter(const std::string& name);
 
   int render_process_id_;
 
diff --git a/content/shell/common/layout_test/layout_test_messages.h b/content/shell/common/layout_test/layout_test_messages.h
index cef6cb5..7ab85bf1 100644
--- a/content/shell/common/layout_test/layout_test_messages.h
+++ b/content/shell/common/layout_test/layout_test_messages.h
@@ -38,5 +38,3 @@ IPC_MESSAGE_ROUTED4(LayoutTestHostMsg_SetPermission,
                     GURL /* origin */,
                     GURL /* embedding_origin */ )
 IPC_MESSAGE_ROUTED0(LayoutTestHostMsg_ResetPermissions)
-IPC_MESSAGE_CONTROL1(LayoutTestHostMsg_SetBluetoothAdapter,
-                     std::string /* name */)
diff --git a/content/shell/renderer/layout_test/blink_test_runner.cc b/content/shell/renderer/layout_test/blink_test_runner.cc
index 71f00ac..905eb5f 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.cc
+++ b/content/shell/renderer/layout_test/blink_test_runner.cc
@@ -464,7 +464,7 @@ void BlinkTestRunner::SetDeviceColorProfile(const std::string& name) {
 }
 
 void BlinkTestRunner::SetBluetoothMockDataSet(const std::string& name) {
-  Send(new LayoutTestHostMsg_SetBluetoothAdapter(name));
+  content::SetBluetoothMockDataSetForTesting(name);
 }
 
 void BlinkTestRunner::SetGeofencingMockProvider(bool service_available) {
diff --git a/content/test/layouttest_support.cc b/content/test/layouttest_support.cc
index 0ae2b51..731f991 100644
--- a/content/test/layouttest_support.cc
+++ b/content/test/layouttest_support.cc
@@ -7,9 +7,8 @@
 #include "base/callback.h"
 #include "base/lazy_instance.h"
 #include "cc/blink/web_layer_impl.h"
-#include "content/browser/bluetooth/bluetooth_dispatcher_host.h"
-#include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
+#include "content/child/bluetooth/web_bluetooth_impl.h"
 #include "content/child/geofencing/web_geofencing_provider_impl.h"
 #include "content/common/gpu/image_transport_surface.h"
 #include "content/public/common/page_state.h"
@@ -313,14 +312,11 @@ void SetDeviceColorProfile(RenderView* render_view, const std::string& name) {
       SetDeviceColorProfileForTesting(color_profile);
 }
 
-void SetBluetoothAdapter(int render_process_id, const std::string& name) {
-  RenderProcessHostImpl* render_process_host_impl =
-      static_cast<RenderProcessHostImpl*>(
-          RenderProcessHost::FromID(render_process_id));
-
-  render_process_host_impl
-      ->GetBluetoothDispatcherHost()
-      ->SetBluetoothAdapterForTesting(name);
+void SetBluetoothMockDataSetForTesting(const std::string& name) {
+  RenderThreadImpl::current()
+      ->blink_platform_impl()
+      ->BluetoothImplForTesting()
+      ->SetBluetoothMockDataSetForTesting(name);
 }
 
 void SetGeofencingMockProvider(bool service_available) {