Delete blink::WebGraphicsContext3D and cc_blink::ContextProviderWebContext

components/test_runner/test_plugin.cc

Index: components/test_runner/test_plugin.cc
diff --git a/components/test_runner/test_plugin.cc b/components/test_runner/test_plugin.cc
index 5a83df492397f8969ab1a8e3c98d14693dc7d2e6..61e12204ed69d91e6b25438b4ee5d3ee3b7b75d4 100644
--- a/components/test_runner/test_plugin.cc
+++ b/components/test_runner/test_plugin.cc
@@ -21,7 +21,6 @@
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/public/platform/WebCompositorSupport.h"
-#include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3DProvider.h"
 #include "third_party/WebKit/public/platform/WebTaskRunner.h"
 #include "third_party/WebKit/public/platform/WebThread.h"
@@ -125,7 +124,6 @@ TestPlugin::TestPlugin(blink::WebFrame* frame,
     : frame_(frame),
       delegate_(delegate),
       container_(nullptr),
-      context_(nullptr),
       gl_(nullptr),
       color_texture_(0),
       mailbox_changed_(false),
@@ -189,7 +187,6 @@ bool TestPlugin::initialize(blink::WebPluginContainer* container) {
   context_provider_ = base::WrapUnique(
       blink::Platform::current()->createOffscreenGraphicsContext3DProvider(
           attrs, url, nullptr, &gl_info));
-  context_ = context_provider_ ? context_provider_->context3d() : nullptr;
   gl_ = context_provider_ ? context_provider_->contextGL() : nullptr;
 
   if (!InitScene())