DevTools: migrate DevTools APIs to use WebContents instead of RenderViewHost.

content/browser/devtools/renderer_overrides_handler.h

Index: content/browser/devtools/renderer_overrides_handler.h
diff --git a/content/browser/devtools/renderer_overrides_handler.h b/content/browser/devtools/renderer_overrides_handler.h
index 08ccf4e063af09203acd648a2d7c127bc4b852ac..4f5076ec46746d758aab97cb9e7a87f519240214 100644
--- a/content/browser/devtools/renderer_overrides_handler.h
+++ b/content/browser/devtools/renderer_overrides_handler.h
@@ -25,6 +25,7 @@ namespace content {
 
 class DevToolsAgentHost;
 class DevToolsTracingHandler;
+class RenderViewHostImpl;
 
 // Overrides Inspector commands before they are sent to the renderer.
 // May override the implementation completely, ignore it, or handle
@@ -101,6 +102,8 @@ class CONTENT_EXPORT RendererOverridesHandler
   scoped_refptr<DevToolsProtocol::Response> InputEmulateTouchFromMouseEvent(
       scoped_refptr<DevToolsProtocol::Command> command);
 
+  RenderViewHostImpl* GetRenderViewHostImpl();
+
   DevToolsAgentHost* agent_;
   scoped_refptr<DevToolsProtocol::Command> screencast_command_;
   bool has_last_compositor_frame_metadata_;