Hide ContentClient getters from embedders so that they they don't reuse content's embedder API. The…

chrome/renderer/page_load_histograms.cc

Index: chrome/renderer/page_load_histograms.cc
===================================================================
--- chrome/renderer/page_load_histograms.cc	(revision 192091)
+++ chrome/renderer/page_load_histograms.cc	(working copy)
@@ -439,11 +439,8 @@
 
   // TODO(mpcomplete): remove the extension-related histograms after we collect
   // enough data. http://crbug.com/100411
-  chrome::ChromeContentRendererClient* client =
-      static_cast<chrome::ChromeContentRendererClient*>(
-          content::GetContentClient()->renderer());
-
-  const bool use_adblock_histogram = client->IsAdblockInstalled();
+  const bool use_adblock_histogram =
+      chrome::ChromeContentRendererClient::IsAdblockInstalled();
   if (use_adblock_histogram) {
     UMA_HISTOGRAM_ENUMERATION(
         "PLT.Abandoned_ExtensionAdblock",
@@ -474,7 +471,8 @@
     }
   }
 
-  const bool use_adblockplus_histogram = client->IsAdblockPlusInstalled();
+  const bool use_adblockplus_histogram =
+      chrome::ChromeContentRendererClient::IsAdblockPlusInstalled();
   if (use_adblockplus_histogram) {
     UMA_HISTOGRAM_ENUMERATION(
         "PLT.Abandoned_ExtensionAdblockPlus",
@@ -506,7 +504,7 @@
   }
 
   const bool use_webrequest_adblock_histogram =
-      client->IsAdblockWithWebRequestInstalled();
+      chrome::ChromeContentRendererClient::IsAdblockWithWebRequestInstalled();
   if (use_webrequest_adblock_histogram) {
     UMA_HISTOGRAM_ENUMERATION(
         "PLT.Abandoned_ExtensionWebRequestAdblock",
@@ -538,7 +536,7 @@
   }
 
   const bool use_webrequest_adblockplus_histogram =
-      client->IsAdblockPlusWithWebRequestInstalled();
+      chrome::ChromeContentRendererClient::IsAdblockPlusWithWebRequestInstalled();
   if (use_webrequest_adblockplus_histogram) {
     UMA_HISTOGRAM_ENUMERATION(
         "PLT.Abandoned_ExtensionWebRequestAdblockPlus",
@@ -570,7 +568,7 @@
   }
 
   const bool use_webrequest_other_histogram =
-      client->IsOtherExtensionWithWebRequestInstalled();
+      chrome::ChromeContentRendererClient::IsOtherExtensionWithWebRequestInstalled();
   if (use_webrequest_other_histogram) {
     UMA_HISTOGRAM_ENUMERATION(
         "PLT.Abandoned_ExtensionWebRequestOther",