InstantExtended: Add js api for custom logo.

chrome/browser/ui/browser_instant_controller.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/browser_instant_controller.h"
 
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/instant/instant_controller.h"
 #include "chrome/browser/prefs/pref_service.h"
@@ skipping 77 matching lines @@
 
     GURL url = preview->web_contents()->GetURL();
     DCHECK(browser_->profile()->GetExtensionService());
     if (browser_->profile()->GetExtensionService()->IsInstalledApp(url)) {
       AppLauncherHandler::RecordAppLaunchType(
           extension_misc::APP_LAUNCH_OMNIBOX_INSTANT);
     }
   }
 }
 
+void BrowserInstantController::SetHasCustomLogo(bool has_logo) {
+  browser_->window()->SetInstantHasCustomLogo(has_logo);

[samarth, 2012/10/10 22:16:53]

I agree with Sreeram that plumbing this through BrowserView feels weird.

Using a SearchMode state makes some sense since SearchViewController uses the
state to determine what kind of UI to show. So a NTP_NO_LOGO state might work. 
On the other hand that complicates the state transitions there a lot more. 

Yet another option is to create a new Observer interface for listening to state
changes in the Instant overlay. That seems a bit heavyweight for a single bool
but could make more sense if we need to pass through other state here.

+}
+
 void BrowserInstantController::SetSuggestedText(
     const string16& text,
     InstantCompleteBehavior behavior) {
   if (browser_->window()->GetLocationBar())
     browser_->window()->GetLocationBar()->SetSuggestedText(text, behavior);
 }
 
 gfx::Rect BrowserInstantController::GetInstantBounds() {
   return browser_->window()->GetInstantBounds();
 }
@@ skipping 42 matching lines @@
 // BrowserInstantController, private:
 
 void BrowserInstantController::ResetInstant() {
   instant_.reset(
       !browser_shutdown::ShuttingDownWithoutClosingBrowsers() &&
       browser_->is_type_tabbed() ?
           InstantController::CreateInstant(browser_->profile(), this) : NULL);
 }
 
 }  // namespace chrome