[Android WebView] Implement the capture picture API.

android_webview/browser/renderer_host/aw_render_view_host_ext.cc

Index: android_webview/browser/renderer_host/aw_render_view_host_ext.cc
diff --git a/android_webview/browser/renderer_host/aw_render_view_host_ext.cc b/android_webview/browser/renderer_host/aw_render_view_host_ext.cc
index 73bcad0c5482ac625d9af265876a9950c29aa6cd..e18b61e93d130516862e7e677ea2c896030aa7a4 100644
--- a/android_webview/browser/renderer_host/aw_render_view_host_ext.cc
+++ b/android_webview/browser/renderer_host/aw_render_view_host_ext.cc
@@ -61,6 +61,11 @@ const AwHitTestData& AwRenderViewHostExt::GetLastHitTestData() const {
   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 =
@@ -112,4 +117,8 @@ void AwRenderViewHostExt::OnPictureUpdated() {
                               routing_id());
 }
 
+void AwRenderViewHostExt::CapturePictureSync() {
+  Send(new AwViewMsg_CapturePictureSync(web_contents()->GetRoutingID()));
+}
+
 }  // namespace android_webview