Remove some unused declarations.

chrome/renderer/chrome_render_thread_observer.h

Index: chrome/renderer/chrome_render_thread_observer.h
diff --git a/chrome/renderer/chrome_render_thread_observer.h b/chrome/renderer/chrome_render_thread_observer.h
index 06a1daadcd1daeac34d4cfd600495fa7931b7980..0549d020ebcf6a98fdd84ae54e6ac4381236617b 100644
--- a/chrome/renderer/chrome_render_thread_observer.h
+++ b/chrome/renderer/chrome_render_thread_observer.h
@@ -16,9 +16,6 @@
 #include "components/variations/child_process_field_trial_syncer.h"
 #include "content/public/renderer/render_thread_observer.h"
 
-class GURL;
-struct ContentSettings;
-
 namespace content {
 class ResourceDispatcherDelegate;
 }
@@ -57,10 +54,7 @@ class ChromeRenderThreadObserver : public content::RenderThreadObserver,
                                   const std::string& group_name) override;
 
   void OnSetIsIncognitoProcess(bool is_incognito_process);
-  void OnSetContentSettingsForCurrentURL(

[sky, 2016/12/09 00:22:04]

Something tells me this is from your other patch.

[nigeltao1, 2016/12/09 05:03:08]

It's not. The CQ dry run failures were from something else breaking the build.

-      const GURL& url, const ContentSettings& content_settings);
   void OnSetContentSettingRules(const RendererContentSettingRules& rules);
-  void OnGetCacheResourceStats();
   void OnSetFieldTrialGroup(const std::string& trial_name,
                             const std::string& group_name);