[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..57f9a62209c015741316d26eaff20690774549b4 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
@@ -4,6 +4,7 @@
 
 #include "android_webview/browser/renderer_host/aw_render_view_host_ext.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"
@@ -61,6 +62,11 @@ 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 +118,9 @@ void AwRenderViewHostExt::OnPictureUpdated() {
                               routing_id());
 }
 
+void AwRenderViewHostExt::CapturePictureSync() {
+  ScopedAllowWaitForLegacyWebViewApi wait;
+  Send(new AwViewMsg_CapturePictureSync(web_contents()->GetRoutingID()));
+}
+
 }  // namespace android_webview