DCHECK if shader compilation fails that it's due to context loss.

gpu/command_buffer/client/gles2_implementation.cc

 // Copyright (c) 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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
@@ skipping 4085 matching lines @@
   WaitForCmd();
   result->CopyResult(params);
   GPU_CLIENT_LOG_CODE_BLOCK({
     for (int32 i = 0; i < result->GetNumResults(); ++i) {
       GPU_CLIENT_LOG("  " << i << ": " << result->GetData()[i]);
     }
   });
   CheckGLError();
 }
 
+GLenum GLES2Implementation::GetGraphicsResetStatusKHR() {
+  GPU_CLIENT_SINGLE_THREAD_CHECK();
+  GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glGetGraphicsResetStatusKHR()");
+  // If we can't make command buffers then the context is lost.
+  if (gpu_control_->IsGpuChannelLost())
+    return GL_UNKNOWN_CONTEXT_RESET_KHR;
+  // Otherwise, check the command buffer if it is lost.
+  if (helper_->IsContextLost()) {
+    // TODO(danakj): We could GetLastState() off the CommandBuffer and return
+    // the actual reason here if we cared to.

[Ken Russell (switch to Gerrit), 2015/06/08 23:08:22]

It's a little unfortunate that this can't return the GUILTY status any more, but
realistically none of the drivers out there were reporting guilty/innocent
contexts with any precision.

[danakj, 2015/06/08 23:09:37]

Ya, that's why I left a todo so someone can track it down and add it if they
care to. For now I think it'd just be extra plumbing/LOC without benefit?

+    return GL_UNKNOWN_CONTEXT_RESET_KHR;
+  }
+  return GL_NO_ERROR;
+}
+
 void GLES2Implementation::Swap() {
   SwapBuffers();
 }
 
 void GLES2Implementation::PartialSwapBuffers(const gfx::Rect& sub_buffer) {
   PostSubBufferCHROMIUM(
       sub_buffer.x(), sub_buffer.y(), sub_buffer.width(), sub_buffer.height());
 }
 
 static GLenum GetGLESOverlayTransform(gfx::OverlayTransform plane_transform) {
@@ skipping 1569 matching lines @@
   CheckGLError();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu