Move all remaining appcache-related code to content namespace

content/browser/appcache/appcache_histograms.cc

Index: content/browser/appcache/appcache_histograms.cc
diff --git a/webkit/browser/appcache/appcache_histograms.cc b/content/browser/appcache/appcache_histograms.cc
similarity index 97%
rename from webkit/browser/appcache/appcache_histograms.cc
rename to content/browser/appcache/appcache_histograms.cc
index b7299e658f378cc2aae075fafe2cad8e34192ea8..ff221b075afbaf021fe4db452f4c07850e63f196 100644
--- a/webkit/browser/appcache/appcache_histograms.cc
+++ b/content/browser/appcache/appcache_histograms.cc
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "webkit/browser/appcache/appcache_histograms.h"
+#include "content/browser/appcache/appcache_histograms.h"
 
 #include "base/metrics/histogram.h"
 
-namespace appcache {
+namespace content {
 
 static std::string OriginToCustomHistogramSuffix(const GURL& origin_url) {
   if (origin_url.host() == "docs.google.com")
@@ -151,4 +151,4 @@ void AppCacheHistograms::AddMissingManifestDetectedAtCallsite(
        callsite, NUM_MISSING_MANIFEST_CALLSITE_TYPES);
 }
 
-}  // namespace appcache
+}  // namespace content