Implement the Platform::sharedOffscreenGraphicsContext3D method.

webkit/support/test_webkit_platform_support.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.
 
 #include "webkit/support/test_webkit_platform_support.h"
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/metrics/stats_counters.h"
 #include "base/path_service.h"
@@ skipping 421 matching lines @@
               webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl());
       if (!context->Initialize(attributes, NULL))
         return NULL;
       return context.release();
     }
   }
   NOTREACHED();
   return NULL;
 }
 
+WebKit::WebGraphicsContext3D*
+TestWebKitPlatformSupport::sharedOffscreenGraphicsContext3D() {
+  static WebKit::WebGraphicsContext3D* context = NULL;

[piman, 2013/02/11 18:19:46]

/Cry. Can't we make this a member?

[danakj, 2013/02/11 18:22:06]

Uhm, yah I guess so!

[danakj, 2013/02/11 18:33:57]

Done.

+  if (!context) {
+    WebKit::WebGraphicsContext3D::Attributes attributes;
+    attributes.depth = false;
+    attributes.stencil = true;
+    attributes.antialias = false;
+    attributes.shareResources = true;
+    attributes.noAutomaticFlushes = true;
+    context = createOffscreenGraphicsContext3D(attributes);
+  }
+  return context;
+}
+
+
 bool TestWebKitPlatformSupport::canAccelerate2dCanvas() {
   // We supply an OS-MESA based context for accelarated 2d
   // canvas, which should always work.
   return true;
 }
 
 double TestWebKitPlatformSupport::audioHardwareSampleRate() {
   return 44100.0;
 }
 
@@ skipping 152 matching lines @@
   return 0;
 }
 
 WebKit::WebGestureCurve* TestWebKitPlatformSupport::createFlingAnimationCurve(
     int device_source,
     const WebKit::WebFloatPoint& velocity,
     const WebKit::WebSize& cumulative_scroll) {
   // Caller will retain and release.
   return new WebGestureCurveMock(velocity, cumulative_scroll);
 }