Move cache clearing from AwRenderViewExt to AwRenderFrameExt.

BUG=593473
TEST=no change

Review URL: https://codereview.chromium.org/1785493002

Cr-Commit-Position: refs/heads/master@{#380494}
diff --git a/android_webview/renderer/aw_render_frame_ext.h b/android_webview/renderer/aw_render_frame_ext.h
index 09c9853..cb85969 100644
--- a/android_webview/renderer/aw_render_frame_ext.h
+++ b/android_webview/renderer/aw_render_frame_ext.h
@@ -10,6 +10,7 @@
 #include "ui/gfx/geometry/point_f.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/geometry/size_f.h"
+#include "url/origin.h"
 
 namespace blink {
 enum WebMeaningfulLayout;
@@ -53,6 +54,8 @@
   blink::WebView* GetWebView();
   blink::WebFrameWidget* GetWebFrameWidget();
 
+  url::Origin last_origin_;
+
   DISALLOW_COPY_AND_ASSIGN(AwRenderFrameExt);
 };