Add tab switch notification to the Mac plugin plumbing.

Using the new notification:
- Update plugin clip rect when it's not in a visible tab.
- Update plugin idle event rate when it's not in a visible tab.
- Switch the unfocus-on-tab-switch event to be based on the this new notification, instead of a browser-level broadcast.

Related changes:
- Stop sending redundant focus events to plugins.
- Send window activation to Carbon event plugins too, not just Cocoa.
- Now that plugins are getting window and tab de-focus events directly, remove the older hack to force all plugins to lose focus any window or tab loses focus.

BUG=29371, 32229, 30838
TEST=Flash should still only register keystrokes when it is in the active window+tab. Plugins in background tabs should use less CPU.

Review URL: http://codereview.chromium.org/548224

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@37743 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 11 insertions, 3 deletions

diff --git a/chrome/plugin/plugin_thread.cc b/chrome/plugin/plugin_thread.cc
index fb02ac5..0a9ef12 100644
--- a/chrome/plugin/plugin_thread.cc
+++ b/chrome/plugin/plugin_thread.cc
@@ -149,14 +149,15 @@ void PluginThread::OnPluginMessage(const std::vector<unsigned char> &data) {
 
 #if defined(OS_MACOSX)
 void PluginThread::OnPluginFocusNotify(uint32 instance_id) {
-  WebPluginDelegateImpl* instance =
+  WebPluginDelegateImpl* focused_instance =
       reinterpret_cast<WebPluginDelegateImpl*>(instance_id);
   std::set<WebPluginDelegateImpl*> active_delegates =
       WebPluginDelegateImpl::GetActiveDelegates();
   for (std::set<WebPluginDelegateImpl*>::iterator iter =
            active_delegates.begin();
        iter != active_delegates.end(); iter++) {
-    (*iter)->FocusNotify(instance);
+    WebPluginDelegateImpl* instance = *iter;
+    instance->FocusChanged(instance == focused_instance);
   }
 }
 #endif
diff --git a/chrome/plugin/webplugin_delegate_stub.cc b/chrome/plugin/webplugin_delegate_stub.cc
index 253d7cf..cf6e842 100644
--- a/chrome/plugin/webplugin_delegate_stub.cc
+++ b/chrome/plugin/webplugin_delegate_stub.cc
@@ -123,6 +123,8 @@ void WebPluginDelegateStub::OnMessageReceived(const IPC::Message& msg) {
                         OnSendJavaScriptStream)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(PluginMsg_SetWindowFocus, OnSetWindowFocus)
+    IPC_MESSAGE_HANDLER(PluginMsg_SetContainerVisibility,
+                        OnSetContainerVisibility)
 #endif
     IPC_MESSAGE_HANDLER(PluginMsg_DidReceiveManualResponse,
                         OnDidReceiveManualResponse)
@@ -338,7 +340,11 @@ void WebPluginDelegateStub::OnSendJavaScriptStream(const GURL& url,
 void WebPluginDelegateStub::OnSetWindowFocus(bool has_focus) {
   delegate_->SetWindowHasFocus(has_focus);
 }
-#endif
+
+void WebPluginDelegateStub::OnSetContainerVisibility(bool is_visible) {
+  delegate_->SetContainerVisibility(is_visible);
+}
+#endif  // OS_MACOSX
 
 void WebPluginDelegateStub::OnDidReceiveManualResponse(
     const GURL& url,
diff --git a/chrome/plugin/webplugin_delegate_stub.h b/chrome/plugin/webplugin_delegate_stub.h
index 5728fdd..b783832 100644
--- a/chrome/plugin/webplugin_delegate_stub.h
+++ b/chrome/plugin/webplugin_delegate_stub.h
@@ -80,6 +80,7 @@ class WebPluginDelegateStub : public IPC::Channel::Listener,
 
 #if defined(OS_MACOSX)
   void OnSetWindowFocus(bool has_focus);
+  void OnSetContainerVisibility(bool is_visible);
 #endif
 
   void OnDidReceiveManualResponse(