Add embedder api for participating in gpu logic

content/app/content_main_runner.cc

 // Copyright (c) 2012 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 "content/public/app/content_main_runner.h"
 
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <string>
@@ skipping 50 matching lines @@
 
 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
 #include "gin/v8_initializer.h"
 #endif
 
 #if !defined(OS_IOS)
 #include "content/app/mojo/mojo_init.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/utility_process_host_impl.h"
+#include "content/public/gpu/content_gpu_client.h"
 #include "content/public/plugin/content_plugin_client.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/public/utility/content_utility_client.h"
 #endif
 
 #if defined(OS_WIN)
 #include <malloc.h>
 #include <cstring>
 
 #include "base/trace_event/trace_event_etw_export_win.h"
@@ skipping 43 matching lines @@
 }  // namespace content
 
 namespace content {
 
 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
 base::LazyInstance<ContentBrowserClient>
     g_empty_content_browser_client = LAZY_INSTANCE_INITIALIZER;
 #endif  //  !CHROME_MULTIPLE_DLL_CHILD
 
 #if !defined(OS_IOS) && !defined(CHROME_MULTIPLE_DLL_BROWSER)
+base::LazyInstance<ContentGpuClient> g_empty_content_gpu_client =

[jam, 2016/01/28 16:47:36]

nit: follow the rest of the lines and indent g_empty_content_gpu_client like
them

[kcwu, 2016/01/29 17:22:44]

Done.

+    LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<ContentPluginClient>
     g_empty_content_plugin_client = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<ContentRendererClient>
     g_empty_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<ContentUtilityClient>
     g_empty_content_utility_client = LAZY_INSTANCE_INITIALIZER;
 #endif  // !OS_IOS && !CHROME_MULTIPLE_DLL_BROWSER
 
 #if defined(OS_POSIX) && !defined(OS_IOS)
 
@@ skipping 61 matching lines @@
 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
     if (process_type.empty()) {
       if (delegate)
         content_client->browser_ = delegate->CreateContentBrowserClient();
       if (!content_client->browser_)
         content_client->browser_ = &g_empty_content_browser_client.Get();
     }
 #endif  // !CHROME_MULTIPLE_DLL_CHILD
 
 #if !defined(OS_IOS) && !defined(CHROME_MULTIPLE_DLL_BROWSER)
+    if (process_type == switches::kGpuProcess ||
+        base::CommandLine::ForCurrentProcess()->HasSwitch(
+            switches::kSingleProcess)) {
+      if (delegate)
+        content_client->gpu_ = delegate->CreateContentGpuClient();
+      if (!content_client->gpu_)
+        content_client->gpu_ = &g_empty_content_gpu_client.Get();
+    }
+
     if (process_type == switches::kPluginProcess ||
         process_type == switches::kPpapiPluginProcess) {
       if (delegate)
         content_client->plugin_ = delegate->CreateContentPluginClient();
       if (!content_client->plugin_)
         content_client->plugin_ = &g_empty_content_plugin_client.Get();
       // Single process not supported in split dll mode.
     } else if (process_type == switches::kRendererProcess ||
                base::CommandLine::ForCurrentProcess()->HasSwitch(
                    switches::kSingleProcess)) {
@@ skipping 570 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 };
 
 // static
 ContentMainRunner* ContentMainRunner::Create() {
   return new ContentMainRunnerImpl();
 }
 
 }  // namespace content