Revert 287732 "<webview>: Move autosize from content to chrome."

The AutoSize test was failing on Mac:
WebViewTest.AutoSize (run #1):
[ RUN      ] WebViewTest.AutoSize
[9340:71171:0806/013452:ERROR:simple_menu_model.cc(135)] Not implemented reached in void ui::SimpleMenuModel::AddSeparator(ui::MenuSeparatorType)
[9340:71171:0806/013452:ERROR:simple_menu_model.cc(135)] Not implemented reached in void ui::SimpleMenuModel::AddSeparator(ui::MenuSeparatorType)
[9340:71171:0806/013452:ERROR:simple_menu_model.cc(135)] Not implemented reached in void ui::SimpleMenuModel::AddSeparator(ui::MenuSeparatorType)
[9340:71171:0806/013452:ERROR:simple_menu_model.cc(135)] Not implemented reached in void ui::SimpleMenuModel::AddSeparator(ui::MenuSeparatorType)
[9340:97283:0806/013453:WARNING:file_descriptor_set_posix.cc(22)] FileDescriptorSet destroyed with unconsumed descriptors
[9340:97283:0806/013453:WARNING:file_descriptor_set_posix.cc(22)] FileDescriptorSet destroyed with unconsumed descriptors
[9340:71171:0806/013455:INFO:CONSOLE(14)] "guest.loadstop", source: chrome-extension://blepeeghknicglkaidbjijdlejjompdl/main.js (14)
ASSERTION FAILED: !enable || !minSize.isEmpty()

(log: http://build.chromium.org/p/chromium.mac/builders/Mac%2010.7%20Tests%20%28dbg%29%283%29/builds/26134/steps/browser_tests/logs/AutoSize)

> <webview>: Move autosize from content to chrome.
> 
> BUG=330264
> TBR=kenrb@chromium.org for browser_plugin_messages.h, kalman@chromium.org for guest_view_internal.json
> 
> Review URL: https://codereview.chromium.org/427883002

TBR=fsamuel@chromium.org

Review URL: https://codereview.chromium.org/446823002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287746 0039d316-1c4b-4281-b951-d872f2087c98
24 files changed