Add a utility method to receive an AwContents

android_webview/native/aw_contents.cc

Index: android_webview/native/aw_contents.cc
diff --git a/android_webview/native/aw_contents.cc b/android_webview/native/aw_contents.cc
index f170e4927ac7041ee9ce4006daaf45e2d441da1d..334808f969aa586c8c2ed4f42e8ca5894155dbbd 100644
--- a/android_webview/native/aw_contents.cc
+++ b/android_webview/native/aw_contents.cc
@@ -35,6 +35,7 @@
 #include "content/public/browser/cert_store.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/ssl_status.h"
 #include "jni/AwContents_jni.h"
@@ -115,6 +116,18 @@ AwContents* AwContents::FromWebContents(WebContents* web_contents) {
   return AwContentsUserData::GetContents(web_contents);
 }
 
+// static
+AwContents* AwContents::FromID(int render_process_id, int render_view_id) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  const content::RenderViewHost* rvh =
+      content::RenderViewHost::FromID(render_process_id, render_view_id);
+  if (!rvh) return NULL;
+  content::WebContents* web_contents =
+      content::WebContents::FromRenderViewHost(rvh);
+  if (!web_contents) return NULL;
+  return FromWebContents(web_contents);
+}
+
 AwContents::AwContents(JNIEnv* env,
                        jobject obj,
                        jobject web_contents_delegate)