Send IME events to windowless plug-ins (Chromium side)

This change adds a new class WebPluginIMEWin that converts the platform-independent IME data sent from a renderer process (or WebKit) to the Win32 IME messages and send them to a plug-in. To allow the plug-in to retrieve the IME data with IMM32 function calls, this change also adds a patch to GetProcessAddress(). (Flash seems to retrieve the pointers to IMM32 function with this function.) This change also sends IME status retrieved from the plug-in to a browser process (via a renderer process).

BUG=82507
TEST=manual
Review URL: http://codereview.chromium.org/7082034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@103869 0039d316-1c4b-4281-b951-d872f2087c98
14 files changed