Fullscreen JS API implementation.

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index 974f3e86b0a5a705bb864c346edf9f7f3afdd20d..11f8619c3fce14c19553d3b5f662c9d2002d2cc0 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -1200,6 +1200,9 @@ IPC_MESSAGE_ROUTED2(ViewMsg_SavePageAsMHTML,
                     int /* job_id */,
                     IPC::PlatformFileForTransit /* file handle */)
 
+// Exit fullscreen.
+IPC_MESSAGE_ROUTED0(ViewMsg_ExitFullscreen)
+
 // Messages sent from the renderer to the browser.
 
 // Sent by the renderer when it is creating a new window.  The browser creates
@@ -1960,6 +1963,12 @@ IPC_MESSAGE_ROUTED2(ViewHostMsg_UpdateInspectorSetting,
                     std::string,  /* key */
                     std::string /* value */)
 
+// Puts the browser into fullscreen mode.
+IPC_MESSAGE_ROUTED0(ViewHostMsg_EnterFullscreen);
+
+// Makes the browser exit fullscreen mode.
+IPC_MESSAGE_ROUTED0(ViewHostMsg_ExitFullscreen);
+
 // Send back a string to be recorded by UserMetrics.
 IPC_MESSAGE_CONTROL1(ViewHostMsg_UserMetricsRecordAction,
                      std::string /* action */)