Removing GraphicsContext from ImageBuffer

Source/platform/graphics/RecordingImageBufferSurfaceTest.cpp

 // Copyright 2014 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 "config.h"
 
 #include "platform/graphics/RecordingImageBufferSurface.h"
 
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageBuffer.h"
@@ skipping 191 matching lines @@
         EXPECT_EQ(2, m_fakeImageBufferClient->frameCount());
         m_testSurface->getPicture();
         EXPECT_EQ(3, m_fakeImageBufferClient->frameCount());
         expectDisplayListEnabled(true);
     }
 
     void testClearRect()
     {
         m_testSurface->initializeCurrentFrame();
         m_testSurface->getPicture();
-        m_imageBuffer->context()->clearRect(FloatRect(FloatPoint(0, 0), FloatSize(m_testSurface->size())));
+        SkPaint clearPaint;
+        clearPaint.setXfermodeMode(SkXfermode::kClear_Mode);
+        m_imageBuffer->canvas()->drawRect(SkRect::MakeWH(m_testSurface->size().width(), m_testSurface->size().height()), clearPaint);
         m_fakeImageBufferClient->fakeDraw();
         EXPECT_EQ(1, m_fakeImageBufferClient->frameCount());
         m_testSurface->getPicture();
         EXPECT_EQ(2, m_fakeImageBufferClient->frameCount());
         expectDisplayListEnabled(true);
     }
 
     void expectDisplayListEnabled(bool displayListEnabled)
     {
         EXPECT_EQ(displayListEnabled, (bool)m_testSurface->m_currentFrame.get());
@@ skipping 168 matching lines @@
 }
 
 DEFINE_TEST_TASK_WRAPPER_CLASS(testClearRect)
 TEST_F(RecordingImageBufferSurfaceTest, testClearRect)
 {
     CALL_TEST_TASK_WRAPPER(testClearRect);
     expectDisplayListEnabled(true);
 }
 
 } // namespace