[Android WebView] Implement the capture picture API.

android_webview/browser/renderer_host/aw_render_view_host_ext.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/browser/renderer_host/aw_render_view_host_ext.h"
 
 #include "android_webview/browser/aw_browser_context.h"
+#include "android_webview/browser/scoped_allow_wait_for_legacy_web_view_api.h"
 #include "android_webview/common/render_view_messages.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/frame_navigate_params.h"
 
 namespace android_webview {
 
 AwRenderViewHostExt::AwRenderViewHostExt(content::WebContents* contents,
                                          Client* client)
     : content::WebContentsObserver(contents),
       has_new_hit_test_data_(false),
@@ skipping 33 matching lines @@
   Send(new AwViewMsg_DoHitTest(web_contents()->GetRoutingID(),
                                view_x,
                                view_y));
 }
 
 const AwHitTestData& AwRenderViewHostExt::GetLastHitTestData() const {
   DCHECK(CalledOnValidThread());
   return last_hit_test_data_;
 }
 
+void AwRenderViewHostExt::EnableCapturePictureCallback(bool enabled) {
+  Send(new AwViewMsg_EnableCapturePictureCallback(
+      web_contents()->GetRoutingID(), enabled));
+}
+
 void AwRenderViewHostExt::RenderViewGone(base::TerminationStatus status) {
   DCHECK(CalledOnValidThread());
   for (std::map<int, DocumentHasImagesResult>::iterator pending_req =
            pending_document_has_images_requests_.begin();
        pending_req != pending_document_has_images_requests_.end();
       ++pending_req) {
     pending_req->second.Run(false);
   }
 }
 
@@ skipping 40 matching lines @@
   last_hit_test_data_ = hit_test_data;
   has_new_hit_test_data_ = true;
 }
 
 void AwRenderViewHostExt::OnPictureUpdated() {
   if (client_)
     client_->OnPictureUpdated(web_contents()->GetRenderProcessHost()->GetID(),
                               routing_id());
 }
 
+bool AwRenderViewHostExt::IsRenderViewReady() const {
+  return web_contents()->GetRenderProcessHost()->HasConnection() &&
+      web_contents()->GetRenderViewHost() &&
+      web_contents()->GetRenderViewHost()->IsRenderViewLive();
+}
+
+void AwRenderViewHostExt::CapturePictureSync() {
+  if (!IsRenderViewReady())
+    return;
+
+  ScopedAllowWaitForLegacyWebViewApi wait;
+  Send(new AwViewMsg_CapturePictureSync(web_contents()->GetRoutingID()));
+}
+
 }  // namespace android_webview