Make it possible to read CLD data from a file

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 f569ff7c3d4293c8919fffde1d1968f1d8b0c743..d0db29d4cfee4190229efe74d6eb6de4d7ba3e70 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -410,6 +410,13 @@ IPC_MESSAGE_ROUTED2(ChromeViewMsg_RetrieveMetaTagContent,
                     std::string /* tag_name */ )
 #endif  // defined(OS_ANDROID)
 
+// Informs the renderer process that Compact Language Detector (CLD) data is
+// available and provides an IPC::PlatformFileForTransit obtained from
+// IPC::GetFileHandleForProcess(...)
+// See also: ChromeViewHostMsg_NeedCLDData
+IPC_MESSAGE_ROUTED1(ChromeViewMsg_CLDDataAvailable,
+                    IPC::PlatformFileForTransit)
+
 // chrome.principals messages ------------------------------------------------
 
 // Message sent from the renderer to the browser to get the list of browser
@@ -776,3 +783,10 @@ IPC_MESSAGE_ROUTED4(ChromeViewHostMsg_DetailedConsoleMessageAdded,
                     base::string16 /* source */,
                     extensions::StackTrace /* stack trace */,
                     int32 /* severity level */)
+
+// Informs the browser process that Compact Language Detector (CLD) data is
+// required by the originating renderer. The browser process should respond
+// with a ChromeViewMsg_CLDDataAvailable if the data is available, else it
+// should go unanswered (the renderer will ask again later)
+// See also: ChromeViewMsg_CLDDataAvailable
+IPC_MESSAGE_ROUTED0(ChromeViewHostMsg_NeedCLDData)