Make content text retrieval in ChromeRenderViewObserver never force layout.

chrome/renderer/chrome_render_view_observer.h

Index: chrome/renderer/chrome_render_view_observer.h
diff --git a/chrome/renderer/chrome_render_view_observer.h b/chrome/renderer/chrome_render_view_observer.h
index 22f2fdf5aa2570d277de15e8a925ecd15eaed5b8..1c44d25faf447e23ffdd16414a1776d0956cd065 100644
--- a/chrome/renderer/chrome_render_view_observer.h
+++ b/chrome/renderer/chrome_render_view_observer.h
@@ -56,6 +56,7 @@ class ChromeRenderViewObserver : public content::RenderViewObserver {
   void DidStopLoading() override;
   void DidCommitProvisionalLoad(blink::WebLocalFrame* frame,
                                 bool is_new_navigation) override;
+  void DidFirstLayoutAfterFinishedParsing() override;
   void Navigate(const GURL& url) override;
 
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
@@ -87,9 +88,6 @@ class ChromeRenderViewObserver : public content::RenderViewObserver {
   // Determines if a host is in the strict security host set.
   bool IsStrictSecurityHost(const std::string& host);
 
-  // Checks if a page contains <meta http-equiv="refresh" ...> tag.
-  bool HasRefreshMetaTag(blink::WebFrame* frame);
-
   // Save the JavaScript to preload if a ViewMsg_WebUIJavaScript is received.
   std::vector<base::string16> webui_javascript_;