gpu: reference target surfaces through a globally unique surface id.

content/test/render_view_test.cc

Index: content/test/render_view_test.cc
diff --git a/content/test/render_view_test.cc b/content/test/render_view_test.cc
index 6ae13fcda22491ca93d5d4825c5bb8f30b4b80eb..01ac482ccfd1b9f764a6bdc6fffb3f25e8daa271 100644
--- a/content/test/render_view_test.cc
+++ b/content/test/render_view_test.cc
@@ -46,6 +46,7 @@ using WebKit::WebURLRequest;
 namespace {
 const int32 kOpenerId = 7;
 const int32 kRouteId = 5;
+const int32 kSurfaceId = 42;
 
 #if defined(USE_AURA) && defined(USE_X11)
 // Converts MockKeyboard::Modifiers to ui::EventFlags.
@@ -130,6 +131,7 @@ void RenderViewTest::SetUp() {
   if (!render_thread_.get())
     render_thread_.reset(new MockRenderThread());
   render_thread_->set_routing_id(kRouteId);
+  render_thread_->set_surface_id(kSurfaceId);
 
   command_line_.reset(new CommandLine(CommandLine::NO_PROGRAM));
   params_.reset(new content::MainFunctionParams(*command_line_));
@@ -151,6 +153,7 @@ void RenderViewTest::SetUp() {
       WebPreferences(),
       new SharedRenderViewCounter(0),
       kRouteId,
+      kSurfaceId,
       kInvalidSessionStorageNamespaceId,
       string16(),
       1);