Dispatch geolocation IPCs on the UI thread. Aside from simplifying the code to avoid a lot of threa…

content/browser/android/content_view_core_impl.cc

 // Copyright 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/android/content_view_core_impl.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/output/begin_frame_args.h"
 #include "content/browser/android/gesture_event_type.h"
 #include "content/browser/android/interstitial_page_delegate_android.h"
 #include "content/browser/android/load_url_params.h"
 #include "content/browser/frame_host/interstitial_page_impl.h"
 #include "content/browser/frame_host/navigation_controller_impl.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
+#include "content/browser/geolocation/geolocation_dispatcher_host.h"
 #include "content/browser/media/android/browser_media_player_manager.h"
 #include "content/browser/renderer_host/compositor_impl_android.h"
 #include "content/browser/renderer_host/input/motion_event_android.h"
 #include "content/browser/renderer_host/input/web_input_event_builders_android.h"
 #include "content/browser/renderer_host/input/web_input_event_util.h"
 #include "content/browser/renderer_host/java/java_bound_object.h"
 #include "content/browser/renderer_host/java/java_bridge_dispatcher_host_manager.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
@@ skipping 182 matching lines @@
     ui::WindowAndroid* window_android,
     jobject java_bridge_retained_object_set)
     : WebContentsObserver(web_contents),
       java_ref_(env, obj),
       web_contents_(static_cast<WebContentsImpl*>(web_contents)),
       root_layer_(cc::SolidColorLayer::Create()),
       dpi_scale_(GetPrimaryDisplayDeviceScaleFactor()),
       view_android_(view_android),
       window_android_(window_android),
       device_orientation_(0),
-      geolocation_needs_pause_(false),
       accessibility_enabled_(false) {
   CHECK(web_contents) <<
       "A ContentViewCoreImpl should be created with a valid WebContents.";
 
   root_layer_->SetBackgroundColor(GetBackgroundColor(env, obj));
   gfx::Size physical_size(
       Java_ContentViewCore_getPhysicalBackingWidthPix(env, obj),
       Java_ContentViewCore_getPhysicalBackingHeightPix(env, obj));
   root_layer_->SetBounds(physical_size);
   root_layer_->SetIsDrawable(true);
@@ skipping 87 matching lines @@
           web_contents_->GetRenderViewHost());
       if (new_pid != old_pid) {
         // Notify the Java side of the change of the current renderer process.
         JNIEnv* env = AttachCurrentThread();
         ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
         if (!obj.is_null()) {
           Java_ContentViewCore_onRenderProcessSwap(env, obj.obj());
         }
       }
       SetFocusInternal(HasFocus());
-      if (geolocation_needs_pause_)
-        PauseOrResumeGeolocation(true);
 
       SetAccessibilityEnabledInternal(accessibility_enabled_);
       break;
     }
     case NOTIFICATION_RENDERER_PROCESS_CREATED: {
       // Notify the Java side of the current renderer process.
       RenderProcessHost* source_process_host =
           Source<RenderProcessHost>(source).ptr();
       RenderProcessHost* current_process_host =
           web_contents_->GetRenderViewHost()->GetProcess();
@@ skipping 66 matching lines @@
   PauseVideo();
 }
 
 void ContentViewCoreImpl::PauseVideo() {
   RenderViewHost* host = web_contents_->GetRenderViewHost();
   if (host)
     host->Send(new ViewMsg_PauseVideo(host->GetRoutingID()));
 }
 
 void ContentViewCoreImpl::PauseOrResumeGeolocation(bool should_pause) {
-  geolocation_needs_pause_ = should_pause;
-  RenderViewHostImpl* rvh =
-      static_cast<RenderViewHostImpl*>(web_contents_->GetRenderViewHost());
-  if (rvh) {
-    scoped_refptr<GeolocationDispatcherHost> geolocation_dispatcher =
-        static_cast<RenderProcessHostImpl*>(
-            web_contents_->GetRenderProcessHost())->
-            geolocation_dispatcher_host();
-    if (geolocation_dispatcher.get()) {
-      BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
-          base::Bind(&GeolocationDispatcherHost::PauseOrResume,
-          geolocation_dispatcher,
-          rvh->GetRoutingID(),
-          should_pause));
-      geolocation_needs_pause_ = false;
-    }
-  }
+  web_contents_->geolocation_dispatcher_host()->PauseOrResume(should_pause);
 }
 
 // All positions and sizes are in CSS pixels.
 // Note that viewport_width/height is a best effort based.
 // ContentViewCore has the actual information about the physical viewport size.
 void ContentViewCoreImpl::UpdateFrameInfo(
     const gfx::Vector2dF& scroll_offset,
     float page_scale_factor,
     const gfx::Vector2dF& page_scale_factor_limits,
     const gfx::SizeF& content_size,
@@ skipping 1228 matching lines @@
       reinterpret_cast<ui::WindowAndroid*>(window_android),
       retained_objects_set);
   return reinterpret_cast<intptr_t>(view);
 }
 
 bool RegisterContentViewCore(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content