[Mac] Allow fullscreen transitions while constrained windows are open.

r166410 disabled the browser from entering fullscreen mode when any one
tab has a constrained window open (e.g., Print dialog).  However, this
is inconsistent with the behavior on all other desktop platforms.  This
change removes the restriction.

Landing on behalf of miu@chromium.org manually, as to make a branch cut.

BUG=366567,146451
TEST=Repro steps in bug 366567 (easier to understand from the multiple demo videos).  Also, manual testing of browser transition into and out of fullscreen before/after a print dialog is open.
R=avi@chromium.org, sky@chromium.org

Review URL: https://codereview.chromium.org/253493005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266653 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/browser_command_controller.cc

@@ -1260,13 +1260,7 @@ void BrowserCommandController::UpdateCommandsForFullscreenMode() {
 
   // Disable explicit fullscreen toggling when in metro snap mode.
   bool fullscreen_enabled = window_state != WINDOW_STATE_METRO_SNAP;
-#if defined(OS_MACOSX)
-  // The Mac implementation doesn't support switching to fullscreen while
-  // a tab modal dialog is displayed.
-  int tab_index = chrome::IndexOfFirstBlockedTab(browser_->tab_strip_model());
-  bool has_blocked_tab = tab_index != browser_->tab_strip_model()->count();
-  fullscreen_enabled &= !has_blocked_tab;
-#else
+#if !defined(OS_MACOSX)
   if (window_state == WINDOW_STATE_NOT_FULLSCREEN &&
       !profile()->GetPrefs()->GetBoolean(prefs::kFullscreenAllowed)) {
     // Disable toggling into fullscreen mode if disallowed by pref.

chrome/browser/ui/cocoa/browser_window_controller.mm

@@ -2083,9 +2083,6 @@ willAnimateFromState:(BookmarkBar::State)oldState
   if (fullscreen == [self isFullscreen])
     return;
 
-  if (!chrome::IsCommandEnabled(browser_.get(), IDC_FULLSCREEN))
-    return;
-
   if (fullscreen) {
     const BOOL shouldUseSystemFullscreen =
         chrome::mac::SupportsSystemFullscreen() && !fullscreenWindow_ &&

chrome/browser/ui/cocoa/browser_window_controller_private.mm

@@ -277,6 +277,20 @@ willPositionSheet:(NSWindow*)sheet
   // Normally, we don't need to tell the toolbar whether or not to show the
   // divider, but things break down during animation.
   [toolbarController_ setDividerOpacity:[self toolbarDividerOpacity]];
+
+  // Update the position of the active constrained window sheet.  We force this
+  // here because the |sheetParentView| may not have been resized (e.g., to
+  // prevent jank during a fullscreen mode transition), but constrained window
+  // sheets also compute their position based on the bookmark bar and toolbar.
+  content::WebContents* const activeWebContents =
+      browser_->tab_strip_model()->GetActiveWebContents();
+  NSView* const sheetParentView = activeWebContents ?
+      GetSheetParentViewForWebContents(activeWebContents) : nil;
+  if (sheetParentView) {
+    [[NSNotificationCenter defaultCenter]
+      postNotificationName:NSViewFrameDidChangeNotification
+                    object:sheetParentView];
+  }
 }
 
 - (CGFloat)floatingBarHeight {

chrome/browser/ui/cocoa/constrained_window/constrained_window_mac_browsertest.mm

@@ -4,10 +4,8 @@
 
 #include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
 
-#include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
@@ -157,16 +155,3 @@ IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, TabClose) {
                                             TabStripModel::CLOSE_USER_GESTURE));
   EXPECT_EQ(1, tab_strip->count());
 }
-
-// Test that adding a sheet disables fullscreen.
-IN_PROC_BROWSER_TEST_F(ConstrainedWindowMacTest, Fullscreen) {
-  EXPECT_TRUE(chrome::IsCommandEnabled(browser(), IDC_FULLSCREEN));
-
-  // Dialog will delete it self when closed.
-  NiceMock<ConstrainedWindowDelegateMock> delegate;
-  ConstrainedWindowMac dialog(&delegate, tab1_, sheet_);
-
-  EXPECT_FALSE(chrome::IsCommandEnabled(browser(), IDC_FULLSCREEN));
-
-  dialog.CloseWebContentsModalDialog();
-}

chrome/browser/ui/tabs/tab_strip_model_utils.cc

@@ -10,16 +10,6 @@
 
 namespace chrome {
 
-int IndexOfFirstBlockedTab(const TabStripModel* model) {
-  DCHECK(model);
-  for (int i = 0; i < model->count(); ++i) {
-    if (model->IsTabBlocked(i))
-      return i;
-  }
-  // No blocked tabs.
-  return model->count();
-}
-
 void GetOpenUrls(const TabStripModel& tabs,
                  const history::TopSites& top_sites,
                  std::set<std::string>* urls) {

chrome/browser/ui/tabs/tab_strip_model_utils.h

@@ -16,10 +16,6 @@ class TopSites;
 
 namespace chrome {
 
-// Returns the index of the first tab that is blocked. This returns
-// |model->count()| if no tab is blocked.
-int IndexOfFirstBlockedTab(const TabStripModel* model);
-
 // Creates a set containing the canonical URLs of the currently open tabs.
 void GetOpenUrls(const TabStripModel& tabs,
                  const history::TopSites& top_sites,