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..2a886c7236c8d73e1d9c72b2c7cf21102952e1bc 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -410,6 +410,15 @@ IPC_MESSAGE_ROUTED2(ChromeViewMsg_RetrieveMetaTagContent,
                     std::string /* tag_name */ )
 #endif  // defined(OS_ANDROID)
 
+#if defined(CLD2_DYNAMIC_MODE)
+// 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 /* ipc_file_handle */)
+#endif
+
 // chrome.principals messages ------------------------------------------------
 
 // Message sent from the renderer to the browser to get the list of browser
@@ -776,3 +785,12 @@ IPC_MESSAGE_ROUTED4(ChromeViewHostMsg_DetailedConsoleMessageAdded,
                     base::string16 /* source */,
                     extensions::StackTrace /* stack trace */,
                     int32 /* severity level */)
+
+#if defined(CLD2_DYNAMIC_MODE)
+// 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)
+#endif