mojo: Fix window resizing in mojo_sample_app and mojo_demo_launcher.

mojo/examples/sample_app/gles2_client_impl.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 "mojo/examples/sample_app/gles2_client_impl.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <math.h>
 #include <stdlib.h>
 
+#include "gpu/command_buffer/client/gles2_interface.h"
 #include "mojo/public/c/gles2/gles2.h"
 #include "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 
 namespace examples {
 namespace {
 
 float CalculateDragDistance(const mojo::Point& start, const mojo::Point& end) {
   return hypot(static_cast<float>(start.x - end.x),
                static_cast<float>(start.y - end.y));
@@ skipping 16 matching lines @@
 }
 
 GLES2ClientImpl::~GLES2ClientImpl() {
   MojoGLES2DestroyContext(context_);
 }
 
 void GLES2ClientImpl::SetSize(const mojo::Size& size) {
   size_ = size;
   if (size_.width == 0 || size_.height == 0)
     return;
+  static_cast<gpu::gles2::GLES2Interface*>(
+      MojoGLES2GetGLES2Interface(context_))->ResizeCHROMIUM(size_.width,
+                                                            size_.height,
+                                                            1);
   cube_.Init(size_.width, size_.height);
   WantToDraw();
 }
 
 void GLES2ClientImpl::HandleInputEvent(const mojo::Event& event) {
   switch (event.action) {
   case mojo::EVENT_TYPE_MOUSE_PRESSED:
   case mojo::EVENT_TYPE_TOUCH_PRESSED:
     if (event.flags & mojo::EVENT_FLAGS_RIGHT_MOUSE_BUTTON)
       break;
@@ skipping 68 matching lines @@
   float delta = static_cast<float>(offset) / 1000000.;
   last_time_ = now;
   cube_.UpdateForTimeDelta(delta);
   cube_.Draw();
 
   MojoGLES2SwapBuffers();
   WantToDraw();
 }
 
 }  // namespace examples