gpu: Remove Echo and SwapCompletion GL interfacess

cc/test/test_gles2_interface.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_gles2_interface.h"
 
 #include "base/logging.h"
 #include "cc/test/test_web_graphics_context_3d.h"
 
 namespace cc {
 
 TestGLES2Interface::TestGLES2Interface(TestWebGraphicsContext3D* test_context)
-    : test_context_(test_context) {
+    : test_context_(test_context), last_swap_type_(NO_SWAP) {
   DCHECK(test_context_);
 }
 
 TestGLES2Interface::~TestGLES2Interface() {}
 
 void TestGLES2Interface::GenTextures(GLsizei n, GLuint* textures) {
   for (GLsizei i = 0; i < n; ++i) {
     textures[i] = test_context_->createTexture();
   }
 }
@@ skipping 389 matching lines @@
 void TestGLES2Interface::ResizeCHROMIUM(GLuint width,
                                         GLuint height,
                                         float device_scale) {
   test_context_->reshapeWithScaleFactor(width, height, device_scale);
 }
 
 void TestGLES2Interface::LoseContextCHROMIUM(GLenum current, GLenum other) {
   test_context_->loseContextCHROMIUM(current, other);
 }
 
+void TestGLES2Interface::SwapBuffers() {
+  last_swap_type_ = SWAP;
+}
+
+void TestGLES2Interface::PostSubBufferCHROMIUM(GLint x,
+                                               GLint y,
+                                               GLint width,
+                                               GLint height) {
+  last_swap_type_ = PARTIAL_SWAP;
+  last_partial_swap_rect_ = gfx::Rect(x, y, width, height);
+}
+
 }  // namespace cc