Add Cocoa window interposing for plugin process

Adds support for noticing window show/hide done via Cocoa APIs. Also adds interposing on a couple more Carbon calls that I came across while debugging. Refactors to make things a bit less messy:
- Moves responsibility for re-activating the browser when the last plugin window closes into the browser, to simplify that logic.
- Moves utility method for activating the plugin process into the plugin, rather than the interpose library, so the Cocoa code can use it too.
- Add a data-holder and a couple of wrapper methods to reduce code duplication in the window show/hide handling.

BUG=28009, 29321
TEST=Plugin-opened windows (Gmail attachments, full-screen Flash, etc.) should work as expected again.

Review URL: http://codereview.chromium.org/465111

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@34074 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 38 insertions, 0 deletions

diff --git a/chrome/plugin/plugin_interpose_util_mac.h b/chrome/plugin/plugin_interpose_util_mac.h
new file mode 100644
index 0000000..c68d1f2
--- /dev/null
+++ b/chrome/plugin/plugin_interpose_util_mac.h
@@ -0,0 +1,38 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_PLUGIN_PLUGIN_INTERPOSE_UTIL_MAC_H_
+#define CHROME_PLUGIN_PLUGIN_INTERPOSE_UTIL_MAC_H_
+
+#include <Carbon/Carbon.h>
+
+#import "base/basictypes.h"
+
+namespace mac_plugin_interposing {
+
+// Swizzles methods we need to watch in order to manage process and window
+// focus correctly.
+void SetUpCocoaInterposing();
+
+// Brings the plugin process to the front so that the user can see its windows.
+void SwitchToPluginProcess();
+
+// Sends a message to the browser process to inform it that the given window
+// has been brought forward.
+void NotifyBrowserOfPluginSelectWindow(uint32 window_id, CGRect bounds,
+                                       bool modal);
+
+// Sends a message to the browser process to inform it that the given window
+// has been shown.
+void NotifyBrowserOfPluginShowWindow(uint32 window_id, CGRect bounds,
+                                     bool modal);
+
+// Sends a message to the browser process to inform it that the given window
+// has been hidden, and switches focus back to the browser process if there are
+// no remaining plugin windows.
+void NotifyBrowserOfPluginHideWindow(uint32 window_id, CGRect bounds);
+
+}  // namespace MacPluginInterpose
+
+#endif  // CHROME_PLUGIN_PLUGIN_INTERPOSE_UTIL_MAC_H_