content: Add ContextProviderFactory to create a render ContextProvider.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 14a90b273fdaed520ab4755a6641fc37a4ffe0fb..6bd11740edc6c25990ed0d6ddeb0022da26b370b 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -110,6 +110,7 @@
 #include "content/browser/android/browser_surface_texture_manager.h"
 #include "content/browser/android/tracing_controller_android.h"
 #include "content/browser/media/android/browser_media_player_manager.h"
+#include "content/browser/renderer_host/context_provider_factory_impl_android.h"
 #include "content/browser/screen_orientation/screen_orientation_delegate_android.h"
 #include "content/public/browser/screen_orientation_provider.h"
 #include "gpu/ipc/client/android/in_process_surface_texture_manager.h"
@@ -1233,6 +1234,8 @@ int BrowserMainLoop::BrowserThreadsStarted() {
   established_gpu_channel = false;
   always_uses_gpu = ShouldStartGpuProcessOnBrowserStartup();
   BrowserGpuChannelHostFactory::Initialize(established_gpu_channel);
+  ui::ContextProviderFactory::SetInstance(
+      ContextProviderFactoryImpl::GetInstance());

[no sievers, 2016/08/02 20:44:33]

still leaking. (i'm not worried about a normal app that wouldn't shut down on
android, but maybe in a test setup it could leak.)

[Khushal, 2016/08/02 22:22:15]

Resetting it on shutdown. Is that better?

 #elif defined(USE_AURA) || defined(OS_MACOSX)
   established_gpu_channel = true;
   if (!GpuDataManagerImpl::GetInstance()->CanUseGpuBrowserCompositor() ||