Let Flash join and be controlled by media session

content/browser/web_contents/web_contents_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
 
 #include "base/command_line.h"
+#include "base/feature_list.h"
 #include "base/lazy_instance.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/histogram.h"
 #include "base/process/process.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string16.h"
@@ skipping 113 matching lines @@
 #if defined(OS_MACOSX)
 #include "base/mac/foundation_util.h"
 #endif
 
 #if defined(MOJO_SHELL_CLIENT)
 #include "content/browser/web_contents/web_contents_view_mus.h"
 #include "content/public/common/mojo_shell_connection.h"
 #include "ui/aura/mus/mus_util.h"
 #endif
 
+#if defined(ENABLE_PLUGINS)
+#include "content/browser/media/session/pepper_playback_observer.h"
+#endif  // ENABLE_PLUGINS
+
 namespace content {
 namespace {
 
 const int kMinimumDelayBetweenLoadingUpdatesMS = 100;
 const char kDotGoogleDotCom[] = ".google.com";
 
 #if defined(OS_ANDROID)
 const char kWebContentsAndroidKey[] = "web_contents_android";
 #endif  // OS_ANDROID
 
@@ skipping 264 matching lines @@
       loading_weak_factory_(this),
       weak_factory_(this) {
   frame_tree_.SetFrameRemoveListener(
       base::Bind(&WebContentsImpl::OnFrameRemoved,
                  base::Unretained(this)));
 #if defined(OS_ANDROID)
   media_web_contents_observer_.reset(new MediaWebContentsObserverAndroid(this));
 #else
   media_web_contents_observer_.reset(new MediaWebContentsObserver(this));
 #endif
+#if defined (ENABLE_PLUGINS)
+  pepper_playback_observer_.reset(new PepperPlaybackObserver(this));
+#endif
   loader_io_thread_notifier_.reset(new LoaderIOThreadNotifier(this));
   wake_lock_service_context_.reset(new WakeLockServiceContext(this));
 }
 
 WebContentsImpl::~WebContentsImpl() {
   is_being_destroyed_ = true;
 
   rwh_input_event_router_.reset();
 
   for (FrameTreeNode* node : frame_tree_.Nodes()) {
@@ skipping 46 matching lines @@
   if (IsBrowserSideNavigationEnabled()) {
     // Do not update state as the WebContents is being destroyed.
     frame_tree_.root()->ResetNavigationRequest(true);
     if (root->speculative_frame_host()) {
       root->speculative_frame_host()->SetRenderFrameCreated(false);
       root->speculative_frame_host()->SetNavigationHandle(
           std::unique_ptr<NavigationHandleImpl>());
     }
   }
 
+#if defined(ENABLE_PLUGINS)
+  // Call this before WebContentsDestroyed() is broadcasted since
+  // AudioFocusManager will be destroyed after that.
+  pepper_playback_observer_.reset();
+#endif  // defined(ENABLED_PLUGINS)
+
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     FrameDeleted(root->current_frame_host()));
 
   if (root->pending_render_view_host()) {
     FOR_EACH_OBSERVER(WebContentsObserver,
                       observers_,
                       RenderViewDeleted(root->pending_render_view_host()));
   }
 
   FOR_EACH_OBSERVER(WebContentsObserver,
@@ skipping 175 matching lines @@
                         OnUpdatePageImportanceSignals)
     IPC_MESSAGE_HANDLER(FrameHostMsg_Find_Reply, OnFindReply)
     IPC_MESSAGE_HANDLER(ViewHostMsg_AppCacheAccessed, OnAppCacheAccessed)
     IPC_MESSAGE_HANDLER(ViewHostMsg_WebUISend, OnWebUISend)
 #if defined(ENABLE_PLUGINS)
     IPC_MESSAGE_HANDLER(FrameHostMsg_PepperInstanceCreated,
                         OnPepperInstanceCreated)
     IPC_MESSAGE_HANDLER(FrameHostMsg_PepperInstanceDeleted,
                         OnPepperInstanceDeleted)
     IPC_MESSAGE_HANDLER(FrameHostMsg_PepperPluginHung, OnPepperPluginHung)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_PepperStartsPlayback,
+                        OnPepperStartsPlayback)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_PepperStopsPlayback,
+                        OnPepperStopsPlayback)
     IPC_MESSAGE_HANDLER(FrameHostMsg_PluginCrashed, OnPluginCrashed)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestPpapiBrokerPermission,
                         OnRequestPpapiBrokerPermission)
     IPC_MESSAGE_HANDLER_GENERIC(BrowserPluginHostMsg_Attach,
                                 OnBrowserPluginMessage(render_frame_host,
                                                        message))
 #endif
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateFaviconURL, OnUpdateFaviconURL)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ShowValidationMessage,
                         OnShowValidationMessage)
@@ skipping 2991 matching lines @@
 // This exists for render views that don't have a WebUI, but do have WebUI
 // bindings enabled.
 void WebContentsImpl::OnWebUISend(const GURL& source_url,
                                   const std::string& name,
                                   const base::ListValue& args) {
   if (delegate_)
     delegate_->WebUISend(this, source_url, name, args);
 }
 
 #if defined(ENABLE_PLUGINS)
-void WebContentsImpl::OnPepperInstanceCreated() {
-  FOR_EACH_OBSERVER(WebContentsObserver, observers_, PepperInstanceCreated());
+void WebContentsImpl::OnPepperInstanceCreated(int32_t pp_instance) {
+  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                    PepperInstanceCreated());
+  pepper_playback_observer_->PepperInstanceCreated(pp_instance);
 }
 
-void WebContentsImpl::OnPepperInstanceDeleted() {
-  FOR_EACH_OBSERVER(WebContentsObserver, observers_, PepperInstanceDeleted());
+void WebContentsImpl::OnPepperInstanceDeleted(int32_t pp_instance) {
+  FOR_EACH_OBSERVER(WebContentsObserver, observers_,
+                    PepperInstanceDeleted());
+  pepper_playback_observer_->PepperInstanceDeleted(pp_instance);
 }
 
 void WebContentsImpl::OnPepperPluginHung(int plugin_child_id,
                                          const base::FilePath& path,
                                          bool is_hung) {
   UMA_HISTOGRAM_COUNTS("Pepper.PluginHung", 1);
 
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     PluginHungStatusChanged(plugin_child_id, path, is_hung));
 }
 
+void WebContentsImpl::OnPepperStartsPlayback(int32_t pp_instance) {
+  pepper_playback_observer_->PepperStartsPlayback(pp_instance);
+}
+
+void WebContentsImpl::OnPepperStopsPlayback(int32_t pp_instance) {
+  pepper_playback_observer_->PepperStopsPlayback(pp_instance);
+}
+
 void WebContentsImpl::OnPluginCrashed(const base::FilePath& plugin_path,
                                       base::ProcessId plugin_pid) {
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     PluginCrashed(plugin_path, plugin_pid));
 }
 
 void WebContentsImpl::OnRequestPpapiBrokerPermission(
     int routing_id,
     const GURL& url,
     const base::FilePath& plugin_path) {
@@ skipping 1396 matching lines @@
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 void WebContentsImpl::SetJavaScriptDialogManagerForTesting(
     JavaScriptDialogManager* dialog_manager) {
   dialog_manager_ = dialog_manager;
 }
 
 }  // namespace content