Add mechanism to auto mount file systems in response to a URL request.

This code adds a hook for when a file system URL request can not be cracked.
It will allow external media galleries file systems to be lazily created.

BUG=160900

Review URL: https://codereview.chromium.org/195923002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@258064 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 33 insertions, 2 deletions

diff --git a/content/public/browser/content_browser_client.h b/content/public/browser/content_browser_client.h
index a0396ff..01c2eb9 100644
--- a/content/public/browser/content_browser_client.h
+++ b/content/public/browser/content_browser_client.h
@@ -24,6 +24,7 @@
 #include "net/url_request/url_request_job_factory.h"
 #include "third_party/WebKit/public/web/WebNotificationPresenter.h"
 #include "ui/base/window_open_disposition.h"
+#include "webkit/browser/fileapi/file_system_context.h"
 #include "webkit/common/resource_type.h"
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
@@ -583,6 +584,10 @@ class CONTENT_EXPORT ContentBrowserClient {
   virtual void GetAdditionalAllowedSchemesForFileSystem(
       std::vector<std::string>* additional_schemes) {}
 
+  // Returns auto mount handlers for URL requests for FileSystem APIs.
+  virtual void GetURLRequestAutoMountHandlers(
+      std::vector<fileapi::URLRequestAutoMountHandler>* handlers) {}
+
   // Returns additional file system backends for FileSystem API.
   // |browser_context| is needed in the additional FileSystemBackends.
   // It has mount points to create objects returned by additional
diff --git a/content/public/test/test_file_system_backend.cc b/content/public/test/test_file_system_backend.cc
index b473716..8c37a9e 100644
--- a/content/public/test/test_file_system_backend.cc
+++ b/content/public/test/test_file_system_backend.cc
@@ -137,7 +137,6 @@ class TestFileSystemBackend::QuotaUtil
 
   virtual const fileapi::AccessObserverList* GetAccessObservers(
       FileSystemType type) const OVERRIDE {
-    NOTIMPLEMENTED();
     return NULL;
   }
 
diff --git a/content/public/test/test_file_system_context.cc b/content/public/test/test_file_system_context.cc
index d09bbd1..aa954de 100644
--- a/content/public/test/test_file_system_context.cc
+++ b/content/public/test/test_file_system_context.cc
@@ -36,6 +36,25 @@ CreateFileSystemContextWithAdditionalProvidersForTesting(
       make_scoped_refptr(new quota::MockSpecialStoragePolicy()).get(),
       quota_manager_proxy,
       additional_providers.Pass(),
+      std::vector<fileapi::URLRequestAutoMountHandler>(),
+      base_path,
+      CreateAllowFileAccessOptions());
+}
+
+fileapi::FileSystemContext*
+CreateFileSystemContextWithAutoMountersForTesting(
+    quota::QuotaManagerProxy* quota_manager_proxy,
+    ScopedVector<fileapi::FileSystemBackend> additional_providers,
+    const std::vector<fileapi::URLRequestAutoMountHandler>& auto_mounters,
+    const base::FilePath& base_path) {
+  return new fileapi::FileSystemContext(
+      base::MessageLoopProxy::current().get(),
+      base::MessageLoopProxy::current().get(),
+      fileapi::ExternalMountPoints::CreateRefCounted().get(),
+      make_scoped_refptr(new quota::MockSpecialStoragePolicy()).get(),
+      quota_manager_proxy,
+      additional_providers.Pass(),
+      auto_mounters,
       base_path,
       CreateAllowFileAccessOptions());
 }
@@ -51,6 +70,7 @@ fileapi::FileSystemContext* CreateIncognitoFileSystemContextForTesting(
       make_scoped_refptr(new quota::MockSpecialStoragePolicy()).get(),
       quota_manager_proxy,
       additional_providers.Pass(),
+      std::vector<fileapi::URLRequestAutoMountHandler>(),
       base_path,
       CreateIncognitoFileSystemOptions());
 }
diff --git a/content/public/test/test_file_system_context.h b/content/public/test/test_file_system_context.h
index 19a4fc4..8b7c872 100644
--- a/content/public/test/test_file_system_context.h
+++ b/content/public/test/test_file_system_context.h
@@ -7,6 +7,7 @@
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_vector.h"
+#include "webkit/browser/fileapi/file_system_context.h"
 
 namespace quota {
 class QuotaManagerProxy;
@@ -14,7 +15,6 @@ class SpecialStoragePolicy;
 }
 
 namespace fileapi {
-class FileSystemContext;
 class FileSystemBackend;
 }
 
@@ -32,6 +32,13 @@ CreateFileSystemContextWithAdditionalProvidersForTesting(
     ScopedVector<fileapi::FileSystemBackend> additional_providers,
     const base::FilePath& base_path);
 
+fileapi::FileSystemContext*
+CreateFileSystemContextWithAutoMountersForTesting(
+    quota::QuotaManagerProxy* quota_manager_proxy,
+    ScopedVector<fileapi::FileSystemBackend> additional_providers,
+    const std::vector<fileapi::URLRequestAutoMountHandler>& auto_mounters,
+    const base::FilePath& base_path);
+
 fileapi::FileSystemContext* CreateIncognitoFileSystemContextForTesting(
     quota::QuotaManagerProxy* quota_manager_proxy,
     const base::FilePath& base_path);