Move kChromeSearchScheme out of content since it's a chrome feature.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
===================================================================
--- chrome/browser/chrome_content_browser_client.cc	(revision 180071)
+++ chrome/browser/chrome_content_browser_client.cc	(working copy)
@@ -720,18 +720,6 @@
   host->Send(new ChromeViewMsg_SetContentSettingRules(rules));
 }
 
-void ChromeContentBrowserClient::RenderProcessHostDeleted(
-    content::RenderProcessHost* host) {
-  Profile* profile = Profile::FromBrowserContext(host->GetBrowserContext());
-  if (!profile)
-    return;
-
-  InstantService* instant_service =
-      InstantServiceFactory::GetForProfile(profile);
-  if (instant_service)
-    instant_service->RemoveInstantProcess(host->GetID());
-}
-
 GURL ChromeContentBrowserClient::GetEffectiveURL(
     content::BrowserContext* browser_context, const GURL& url) {
   Profile* profile = Profile::FromBrowserContext(browser_context);