Adds proper IPC usage for AudioDevice::GetAudioHardwareBufferSize().

content/common/view_messages.h

Index: content/common/view_messages.h
===================================================================
--- content/common/view_messages.h	(revision 108984)
+++ content/common/view_messages.h	(working copy)
@@ -681,6 +681,10 @@
 IPC_SYNC_MESSAGE_CONTROL0_1(ViewHostMsg_GenerateRoutingID,
                             int /* routing_id */)
 
+// Asks the browser for the default audio hardware buffer-size.
+IPC_SYNC_MESSAGE_CONTROL0_1(ViewHostMsg_GetHardwareBufferSize,
+                            size_t /* buffer_size */)

[jam, 2011/11/08 18:31:31]

we avoid size_t in message definitions since they are different size in 32/64
bit binaries. in the future it is likely that we will have both binaries talking
to each other.

+
 // Asks the browser for the default audio input hardware sample-rate.
 IPC_SYNC_MESSAGE_CONTROL0_1(ViewHostMsg_GetHardwareInputSampleRate,
                             double /* sample_rate */)