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

android_webview/common/aw_content_client.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/common/aw_content_client.h"
 
 #include "base/basictypes.h"
+#include "ipc/ipc_message.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "webkit/user_agent/user_agent_util.h"
 
 namespace android_webview {
 
 std::string AwContentClient::GetProduct() const {
   // "Version/4.0" had been hardcoded in the legacy WebView.
   return std::string("Version/4.0");
 }
@@ skipping 10 matching lines @@
 
 base::StringPiece AwContentClient::GetDataResource(
     int resource_id,
     ui::ScaleFactor scale_factor) const {
   // TODO(boliu): Used only by WebKit, so only bundle those resources for
   // Android WebView.
   return ResourceBundle::GetSharedInstance().GetRawDataResourceForScale(
       resource_id, scale_factor);
 }
 
+bool AwContentClient::CanSendWhileSwappedOut(const IPC::Message* message) {
+  // For legacy API support we perform a few browser -> renderer synchronous IPC
+  // messages that block the browser. However, the synchronous IPC replies might
+  // be dropped by the renderer during a swap out, deadlocking the browser.
+  // Because of this we should never drop any synchronous IPC replies.
+  return message->type() == IPC_REPLY_ID;
+}
+
 }  // namespace android_webview