Use uint64_t instead of size_t inside the web cache manager code.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 61526f07f2aa632b9b1e716e0589a80f4e46946a..72ceba5c2c4f38e0f4c1106cc0a556e7c821ed58 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -24,7 +24,6 @@
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_platform_file.h"
 #include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerPromptReply.h"
-#include "third_party/WebKit/public/web/WebCache.h"
 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
 
 // Singly-included section for enums and custom IPC traits.
@@ -56,18 +55,6 @@ struct ParamTraits<ContentSettingsPattern> {
   static void Log(const param_type& p, std::string* l);
 };
 
-// Manual traits since this struct uses size_t and it's in Blink, so avoid
-// changing Blink due to IPC differences.
-template <>
-struct ParamTraits<blink::WebCache::UsageStats> {
-  typedef blink::WebCache::UsageStats param_type;
-  static void Write(base::Pickle* m, const param_type& u);
-  static bool Read(const base::Pickle* m,
-                   base::PickleIterator* iter,
-                   param_type* u);
-  static void Log(const param_type& p, std::string* l);
-};
-
 }  // namespace IPC
 
 #endif  // CHROME_COMMON_RENDER_MESSAGES_H_
@@ -365,8 +352,12 @@ IPC_MESSAGE_ROUTED1(ChromeViewHostMsg_LoadOfflineCopy, GURL /* url */)
 // Misc messages
 // These are messages sent from the renderer to the browser process.
 
-IPC_MESSAGE_CONTROL1(ChromeViewHostMsg_UpdatedCacheStats,
-                     blink::WebCache::UsageStats /* stats */)
+IPC_MESSAGE_CONTROL5(ChromeViewHostMsg_UpdatedCacheStats,
+                     uint64_t /* min_dead_capacity */,
+                     uint64_t /* max_dead_capacity */,
+                     uint64_t /* capacity */,
+                     uint64_t /* live_size */,
+                     uint64_t /* dead_size */)
 
 // Sent by the renderer process to check whether access to FileSystem is
 // granted by content settings.