Expose the capturePicture feature in RenderView for Android WebView legacy API support.

android_webview/lib/main/aw_main_delegate.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 "android_webview/lib/main/aw_main_delegate.h"
 
 #include "android_webview/browser/aw_content_browser_client.h"
 #include "android_webview/lib/aw_browser_dependency_factory_impl.h"
 #include "android_webview/native/aw_geolocation_permission_context.h"
 #include "android_webview/native/aw_web_contents_view_delegate.h"
@@ skipping 10 matching lines @@
 AwMainDelegate::AwMainDelegate() {
 }
 
 AwMainDelegate::~AwMainDelegate() {
 }
 
 bool AwMainDelegate::BasicStartupComplete(int* exit_code) {
   content::SetContentClient(&content_client_);
 
   CommandLine* command_line = CommandLine::ForCurrentProcess();
-  // Set the command line to enable synchronous API compatibility.
+  // Set the command line to enable compatibility with legacy WebView
+  // synchronous APIs and capture picture.
   command_line->AppendSwitch(switches::kEnableWebViewSynchronousAPIs);
+  command_line->AppendSwitch(switches::kEnableWebViewCapturePictureAPI);
 
   // TODO(leandrogracia): enable with the CapturePicture API support.
   if (false) {
     // Enable impl-side painting in the compositor.
     command_line->AppendSwitch(switches::kForceCompositingMode);
     command_line->AppendSwitch(switches::kEnableThreadedCompositing);
     command_line->AppendSwitch(switches::kEnableDeferredImageDecoding);
     command_line->AppendSwitch(cc::switches::kEnableImplSidePainting);
   }
 
@@ skipping 43 matching lines @@
   return content_browser_client_.get();
 }
 
 content::ContentRendererClient*
     AwMainDelegate::CreateContentRendererClient() {
   content_renderer_client_.reset(new AwContentRendererClient());
   return content_renderer_client_.get();
 }
 
 }  // namespace android_webview