Implement initial chrome.browserAction.openPopup API.

chrome/browser/ui/cocoa/extensions/browser_actions_controller.mm

Index: chrome/browser/ui/cocoa/extensions/browser_actions_controller.mm
diff --git a/chrome/browser/ui/cocoa/extensions/browser_actions_controller.mm b/chrome/browser/ui/cocoa/extensions/browser_actions_controller.mm
index a17f3d8cde36d18dbab3e47d97209012f9400896..2682c5201f251384b94888ca8bef2f6558965ace 100644
--- a/chrome/browser/ui/cocoa/extensions/browser_actions_controller.mm
+++ b/chrome/browser/ui/cocoa/extensions/browser_actions_controller.mm
@@ -138,7 +138,9 @@ const CGFloat kBrowserActionBubbleYOffset = 3.0;
            animate:(BOOL)animate;
 
 // Handles when the given BrowserActionButton object is clicked.
-- (void)browserActionClicked:(BrowserActionButton*)button;
+- (bool)browserActionClicked:(BrowserActionButton*)button;
+- (bool)browserActionClicked:(BrowserActionButton*)button
+                    andGrant:(BOOL)shouldGrant;
 
 // Returns whether the given extension should be displayed. Only displays
 // incognito-enabled extensions in incognito mode. Otherwise returns YES.
@@ -238,6 +240,17 @@ class ExtensionServiceObserverBridge : public content::NotificationObserver,
     [owner_ resizeContainerAndAnimate:NO];
   }
 
+  virtual bool BrowserActionShowPopup(const Extension* extension) OVERRIDE {
+    // Do not override other popups and only show in active window.
+    ExtensionPopupController* popup = [ExtensionPopupController popup];
+    if (popup || !browser_->window()->IsActive())
+      return false;
+
+    BrowserActionButton* button = [owner_ buttonForExtension:extension];
+    return button && [owner_ browserActionClicked:button
+                                         andGrant:false];
+  }
+
  private:
   // The object we need to inform when we get a notification. Weak. Owns us.
   BrowserActionsController* owner_;
@@ -739,10 +752,12 @@ class ExtensionServiceObserverBridge : public content::NotificationObserver,
   }
 }
 
-- (void)browserActionClicked:(BrowserActionButton*)button {
+- (bool)browserActionClicked:(BrowserActionButton*)button
+                    andGrant:(BOOL)shouldGrant {
   const Extension* extension = [button extension];
   GURL popupUrl;
-  switch (toolbarModel_->ExecuteBrowserAction(extension, browser_, &popupUrl)) {
+  switch (toolbarModel_->ExecuteBrowserAction(extension, browser_, &popupUrl,
+                                              shouldGrant)) {
     case ExtensionToolbarModel::ACTION_NONE:
       break;
     case ExtensionToolbarModel::ACTION_SHOW_POPUP: {
@@ -752,9 +767,15 @@ class ExtensionServiceObserverBridge : public content::NotificationObserver,
                              anchoredAt:arrowPoint
                           arrowLocation:info_bubble::kTopRight
                                 devMode:NO];
-      break;
+      return true;
     }
   }
+  return false;
+}
+
+- (bool)browserActionClicked:(BrowserActionButton*)button {
+  return [self browserActionClicked:button
+                           andGrant:true];
 }
 
 - (BOOL)shouldDisplayBrowserAction:(const Extension*)extension {