Grab bag of bugfixes for Lion fullscreen mode.

- Removes a DCHECK() in the InstantLoader that fired incorrectly in presentation
  mode.  In presentation mode, the omnibox is entirely enclosed by the web
  contents, so one part of the DCHECK() was incorrect.

- Mark popups and panels as auxiliary fullscreen windows.  This allows them to
  share a space with a fullscreen window, but not to become a fullscreen window.

- Force a relayout in windowDidFailToExitFullScreen.  Despite the name of the
  delegate method, when a window fails to exit fullscreen mode, it actually does
  exit fullscreen mode.  Forcing a relayout gets the window to draw correctly in
  this "failure" case.

- Fixes a DCHECK() when pressing escape in fullscreen mode.

- Pressing escape when the omnibox is focused (in non-presentation fullscreen
  mode) will now drop the window out of fullscreen mode.

BUG=74065
TEST=None

Review URL: http://codereview.chromium.org/7599029

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@96056 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/instant/instant_loader.cc

@@ -894,7 +894,10 @@ gfx::Rect InstantLoader::GetOmniboxBoundsInTermsOfPreview() {
 
   // In the current Chrome UI, these must always be true so they sanity check
   // the above operations. In a future UI, these may be removed or adjusted.
-  DCHECK_EQ(0, intersection.y());
+  // There is no point in sanity-checking |intersection.y()| because the omnibox
+  // can be placed anywhere vertically relative to the preview (for example, in
+  // Mac fullscreen mode, the omnibox is entirely enclosed by the preview
+  // bounds).
   DCHECK_LE(0, intersection.x());
   DCHECK_LE(0, intersection.width());
   DCHECK_LE(0, intersection.height());

chrome/browser/ui/cocoa/browser_window_controller.mm

@@ -274,9 +274,13 @@ enum {
       [window setAnimationBehavior:NSWindowAnimationBehaviorDocumentWindow];
 
     // Set the window to participate in Lion Fullscreen mode.  Setting this flag
-    // has no effect on Snow Leopard or earlier.
+    // has no effect on Snow Leopard or earlier.  Popups and the devtools panel
+    // can share a fullscreen space with a tabbed window, but they can not be
+    // primary fullscreen windows.
     NSUInteger collectionBehavior = [window collectionBehavior];
-    collectionBehavior |= NSWindowCollectionBehaviorFullScreenPrimary;
+    collectionBehavior |= browser_->type() == Browser::TYPE_TABBED ?
+                          NSWindowCollectionBehaviorFullScreenPrimary :
+                          NSWindowCollectionBehaviorFullScreenAuxiliary;
     [window setCollectionBehavior:collectionBehavior];
 
     // Get the most appropriate size for the window, then enforce the

chrome/browser/ui/cocoa/browser_window_controller_private.mm

@@ -852,6 +852,9 @@ willPositionSheet:(NSWindow*)sheet
 
 - (void)windowDidFailToExitFullScreen:(NSWindow*)window {
   [self deregisterForContentViewResizeNotifications];
+
+  // Force a relayout to try and get the window back into a reasonable state.
+  [self layoutSubviews];
 }
 
 - (void)enableBarVisibilityUpdates {

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.mm

@@ -398,12 +398,14 @@ BOOL ThePasteboardIsTooDamnBig() {
   }
 
   // If the escape key was pressed and no revert happened and we're in
-  // fullscreen mode, make it resign key.
+  // fullscreen mode, give focus to the web contents, which may dismiss the
+  // overlay.
   if (cmd == @selector(cancelOperation:)) {
     BrowserWindowController* windowController =
         [BrowserWindowController browserWindowControllerForView:self];
-    if ([windowController inPresentationMode]) {
+    if ([windowController isFullscreen]) {
       [windowController focusTabContents];
+      textChangedByKeyEvents_ = NO;
       return;
     }
   }