Improve GPU tests to fail when GPU drawing fails

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index fd2d2180ac57f22110b1d2e8b991b31351c5dc6f..7d7b3d33d7be4ade2957a5f57302911d0506b6ff 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -481,6 +481,10 @@ void GpuProcessHost::OnDestroyCommandBuffer(
 }
 
 void GpuProcessHost::OnGraphicsInfoCollected(const content::GPUInfo& gpu_info) {
+  // OnGraphicsInfoCollected is sent back after the GPU process successfully
+  // initializes GL.
+  TRACE_EVENT0("test_gpu", "OnGraphicsInfoCollected");
+
   GpuDataManager::GetInstance()->UpdateGpuInfo(gpu_info);
 }
 
@@ -493,8 +497,6 @@ void GpuProcessHost::OnProcessLaunched() {
   // respond to any requests to establish a GPU channel. The response
   // to such requests require that the GPU process handle be known.
 
-  TRACE_EVENT0("test_gpu", "GpuProcessLaunched");
-
   base::ProcessHandle child_handle = in_process_ ?
       base::GetCurrentProcessHandle() : handle();