ui: No more TestCompositor. Use NullDraw contexts in unit tests.

content/browser/compositor/software_browser_compositor_output_surface_unittest.cc

 // 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 "base/message_loop/message_loop.h"
 #include "cc/output/compositor_frame.h"
 #include "content/browser/compositor/browser_compositor_output_surface_proxy.h"
 #include "content/browser/compositor/software_browser_compositor_output_surface.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/compositor/test/context_factories_for_test.h"
@@ skipping 68 matching lines @@
 
 SoftwareBrowserCompositorOutputSurfaceTest::
     SoftwareBrowserCompositorOutputSurfaceTest() {
   message_loop_.reset(new base::MessageLoopForUI);
 }
 
 SoftwareBrowserCompositorOutputSurfaceTest::
     ~SoftwareBrowserCompositorOutputSurfaceTest() {}
 
 void SoftwareBrowserCompositorOutputSurfaceTest::SetUp() {
-  ui::InitializeContextFactoryForTests(false);
+  bool enable_pixel_output = false;
+  ui::InitializeContextFactoryForTests(enable_pixel_output);
   ui::Compositor::Initialize();
 
   compositor_.reset(new ui::Compositor(gfx::kNullAcceleratedWidget));
   surface_proxy_ =
       new content::BrowserCompositorOutputSurfaceProxy(&surface_map_);
 }
 
 void SoftwareBrowserCompositorOutputSurfaceTest::TearDown() {
   output_surface_.reset();
   compositor_.reset();
@@ skipping 36 matching lines @@
 
   FakeVSyncProvider* vsync_provider = static_cast<FakeVSyncProvider*>(
       output_surface_->software_device()->GetVSyncProvider());
   EXPECT_EQ(0, vsync_provider->call_count());
 
   cc::CompositorFrame frame;
   output_surface_->SwapBuffers(&frame);
 
   EXPECT_EQ(1, vsync_provider->call_count());
 }