cc: Add an integration test for what scale we draw with after pinching

cc/test/test_web_graphics_context_3d.cc

 // Copyright 2013 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 "cc/test/test_web_graphics_context_3d.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 49 matching lines @@
       next_shader_id_(2000),
       max_texture_size_(2048),
       reshape_called_(false),
       width_(0),
       height_(0),
       scale_factor_(-1.f),
       test_support_(NULL),
       last_update_type_(NoUpdate),
       next_insert_sync_point_(1),
       last_waited_sync_point_(0),
+      query_result_available_ext_(1),
       bound_buffer_(0),
       weak_ptr_factory_(this) {
   CreateNamespace();
 }
 
 TestWebGraphicsContext3D::~TestWebGraphicsContext3D() {
   base::AutoLock lock(g_shared_namespace_lock.Get());
   namespace_ = NULL;
 }
 
@@ skipping 270 matching lines @@
     --times_end_query_succeeds_;
   }
 }
 
 void TestWebGraphicsContext3D::getQueryObjectuivEXT(
     GLuint query,
     GLenum pname,
     GLuint* params) {
   // If the context is lost, behave as if result is available.
   if (pname == GL_QUERY_RESULT_AVAILABLE_EXT)
-    *params = 1;
+    *params = query_result_available_ext_;
 }
 
 void TestWebGraphicsContext3D::getIntegerv(
     GLenum pname,
     GLint* value) {
   if (pname == GL_MAX_TEXTURE_SIZE)
     *value = max_texture_size_;
   else if (pname == GL_ACTIVE_TEXTURE)
     *value = GL_TEXTURE0;
 }
@@ skipping 342 matching lines @@
 
 TestWebGraphicsContext3D::Buffer::Buffer() : target(0), size(0) {}
 
 TestWebGraphicsContext3D::Buffer::~Buffer() {}
 
 TestWebGraphicsContext3D::Image::Image() {}
 
 TestWebGraphicsContext3D::Image::~Image() {}
 
 }  // namespace cc