Added more detailed result codes for CreateViewCommandBuffer.

content/common/gpu/gpu_channel.cc

Index: content/common/gpu/gpu_channel.cc
diff --git a/content/common/gpu/gpu_channel.cc b/content/common/gpu/gpu_channel.cc
index 37b2cc9364fd5c363f14a2b4dd9ea352a5cadf2f..b1089eb69080d817113ab9aa8cca4cd3c68e778a 100644
--- a/content/common/gpu/gpu_channel.cc
+++ b/content/common/gpu/gpu_channel.cc
@@ -552,7 +552,7 @@ void GpuChannel::StubSchedulingChanged(bool scheduled) {
   }
 }
 
-bool GpuChannel::CreateViewCommandBuffer(
+CreateCommandBufferResult GpuChannel::CreateViewCommandBuffer(
     const gfx::GLSurfaceHandle& window,
     int32 surface_id,
     const GPUCreateCommandBufferConfig& init_params,
@@ -593,10 +593,10 @@ bool GpuChannel::CreateViewCommandBuffer(
   if (!router_.AddRoute(route_id, stub.get())) {
     DLOG(ERROR) << "GpuChannel::CreateViewCommandBuffer(): "
                    "failed to add route";
-    return false;
+    return CREATE_COMMAND_BUFFER_FAILED_AND_CHANNEL_LOST;
   }
   stubs_.AddWithID(stub.release(), route_id);
-  return true;
+  return CREATE_COMMAND_BUFFER_SUCCEEDED;
 }
 
 GpuCommandBufferStub* GpuChannel::LookupCommandBuffer(int32 route_id) {