Make cc::CompositorFrames movable [Part 1 of 2]

android_webview/browser/parent_output_surface.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 "android_webview/browser/parent_output_surface.h"
 
 #include "android_webview/browser/aw_render_thread_context_provider.h"
 #include "cc/output/output_surface_client.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 
@@ skipping 13 matching lines @@
   LOG(FATAL) << "Render thread context loss";
 }
 
 void ParentOutputSurface::Reshape(const gfx::Size& size,
                                   float scale_factor,
                                   bool has_alpha) {
   DCHECK_EQ(1.f, scale_factor);
   surface_size_ = size;
 }
 
-void ParentOutputSurface::SwapBuffers(cc::CompositorFrame* frame) {
+void ParentOutputSurface::SwapBuffers(
+    std::unique_ptr<cc::CompositorFrame> frame) {
   context_provider_->ContextGL()->ShallowFlushCHROMIUM();
   client_->DidSwapBuffers();
 }
 
 void ParentOutputSurface::ApplyExternalStencil() {
   DCHECK(stencil_state_.stencil_test_enabled);
   gpu::gles2::GLES2Interface* gl = context_provider()->ContextGL();
   gl->StencilFuncSeparate(GL_FRONT, stencil_state_.stencil_front_func,
                           stencil_state_.stencil_front_mask,
                           stencil_state_.stencil_front_ref);
@@ skipping 14 matching lines @@
   auto* gl = static_cast<AwRenderThreadContextProvider*>(context_provider());
   return gl->GetCopyTextureInternalFormat();
 }
 
 void ParentOutputSurface::SetGLState(const ScopedAppGLStateRestore& gl_state) {
   stencil_state_ = gl_state.stencil_state();
   SetExternalStencilTest(stencil_state_.stencil_test_enabled);
 }
 
 }  // namespace android_webview