Remove RenderViewHost parameter from WebContentsObserver::Did{Start|Stop}Loading.

content/browser/web_contents/web_contents_impl_browsertest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "content/browser/frame_host/navigation_entry_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/browser/web_contents/web_contents_view.h"
 #include "content/common/frame_messages.h"
@@ skipping 479 matching lines @@
   }
 
   // WebContentsDelegate:
   void LoadProgressChanged(WebContents* source, double progress) override {
     EXPECT_TRUE(did_start_loading);
     EXPECT_FALSE(did_stop_loading);
     progresses.push_back(progress);
   }
 
   // WebContentsObserver:
-  void DidStartLoading(RenderViewHost* render_view_host) override {
+  void DidStartLoading() override {
     EXPECT_FALSE(did_start_loading);
     EXPECT_EQ(0U, progresses.size());
     EXPECT_FALSE(did_stop_loading);
     did_start_loading = true;
   }
 
-  void DidStopLoading(RenderViewHost* render_view_host) override {
+  void DidStopLoading() override {
     EXPECT_TRUE(did_start_loading);
     EXPECT_GE(progresses.size(), 1U);
     EXPECT_FALSE(did_stop_loading);
     did_stop_loading = true;
   }
 
   bool did_start_loading;
   std::vector<double> progresses;
   bool did_stop_loading;
 };
@@ skipping 117 matching lines @@
   scoped_ptr<FirstVisuallyNonEmptyPaintObserver> observer(
       new FirstVisuallyNonEmptyPaintObserver(shell()));
 
   NavigateToURL(shell(), embedded_test_server()->GetURL("/title1.html"));
 
   observer->WaitForDidFirstVisuallyNonEmptyPaint();
   ASSERT_TRUE(observer->did_fist_visually_non_empty_paint_);
 }
 
 }  // namespace content
-