[DevTools] Issue zoom from DevToolsWindow instead of browser commands.

chrome/browser/ui/browser_commands.cc

 // Copyright 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_commands.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 874 matching lines @@
     // Incognito window it's the newest value of the find pboard content and
     // user-typed text.
     FindBar* find_bar = browser->GetFindBarController()->find_bar();
     find_text = find_bar->GetFindText();
 #endif
     find_helper->StartFinding(find_text, forward_direction, false);
   }
 }
 
 void Zoom(Browser* browser, content::PageZoom zoom) {
-  WebContents* contents = browser->tab_strip_model()->GetActiveWebContents();
-  DevToolsWindow* devtools =
-      DevToolsWindow::GetDockedInstanceForInspectedTab(contents);
-  if (devtools && devtools->web_contents()->GetRenderWidgetHostView() &&
-      devtools->web_contents()->GetRenderWidgetHostView()->HasFocus()) {
-    chrome_page_zoom::Zoom(devtools->web_contents(), zoom);
-    return;
-  }
-
-  chrome_page_zoom::Zoom(contents, zoom);
+  chrome_page_zoom::Zoom(browser->tab_strip_model()->GetActiveWebContents(),
+                         zoom);
 }
 
 void FocusToolbar(Browser* browser) {
   content::RecordAction(UserMetricsAction("FocusToolbar"));
   browser->window()->FocusToolbar();
 }
 
 void FocusLocationBar(Browser* browser) {
   content::RecordAction(UserMetricsAction("FocusLocation"));
   browser->window()->SetFocusToLocationBar(true);
@@ skipping 274 matching lines @@
           Browser::TYPE_POPUP, app_name, gfx::Rect(), browser->profile(),
           browser->host_desktop_type()));
   app_browser->tab_strip_model()->AppendWebContents(contents, true);
 
   contents->GetMutableRendererPrefs()->can_accept_load_drops = false;
   contents->GetRenderViewHost()->SyncRendererPrefs();
   app_browser->window()->Show();
 }
 
 }  // namespace chrome