New implementation of font precache on Windows.

content/common/child_process_messages.h

Index: content/common/child_process_messages.h
diff --git a/content/common/child_process_messages.h b/content/common/child_process_messages.h
index a503423d96f61cb245471b6d6842d8e175cdf606..1135650ba66440e6b71548c03b12a79a038e0dcf 100644
--- a/content/common/child_process_messages.h
+++ b/content/common/child_process_messages.h
@@ -59,3 +59,16 @@ IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_TraceDataCollected,
 // Reply to ChildProcessMsg_GetTraceBufferPercentFull.
 IPC_MESSAGE_CONTROL1(ChildProcessHostMsg_TraceBufferPercentFullReply,
                      float /*trace buffer percent full*/)
+
+#if defined(OS_WIN)
+// Request that the given font be loaded by the host so it's cached by the
+// OS. Please see ChildProcessHost::PreCacheFont for details.
+IPC_SYNC_MESSAGE_CONTROL1_0(ChromeUtilityHostMsg_PreCacheFont,

[jam, 2011/09/19 16:31:17]

messages in this file start with ChildProcessMsg or ChildProcessHostMsg.
ChromeUtilityHostMsg would belong in chrome_utility_messages.h, and ViewHostMsg
would belong in view_messages.h

also, sorry if I wasn't clear, but the reason I said these should be moved here
is so that we avoid duplicate messages for the same purpose. i.e. there should
be just one ChildHostMsg_PreCacheFont, and one ChildHostMsg_ReleaseCachedFonts

[arthurhsu, 2011/09/19 18:22:51]

Done.

+                            LOGFONT /* font data */)
+IPC_SYNC_MESSAGE_CONTROL1_0(ViewHostMsg_PreCacheFont,
+                            LOGFONT /* font data */)
+
+// Release the cached font
+IPC_MESSAGE_CONTROL0(ChromeUtilityHostMsg_ReleaseCachedFonts)
+IPC_MESSAGE_CONTROL0(ViewHostMsg_ReleaseCachedFonts)
+#endif  // defined(OS_WIN)