[Mac]: Enable speech sub-menu under the edit menu and pipe it through to the renderer.

content/public/browser/render_widget_host_view.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_
 
 #include "base/basictypes.h"
+#include "base/string16.h"
 #include "content/common/content_export.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "ui/gfx/native_widget_types.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gdk/gdk.h>
 #endif
 
@@ skipping 97 matching lines @@
   // Notifies the view that its enclosing window has changed visibility
   // (minimized/unminimized, app hidden/unhidden, etc).
   // TODO(stuartmorgan): This is a temporary plugin-specific workaround for
   // <http://crbug.com/34266>. Once that is fixed, this (and the corresponding
   // message and renderer-side handling) can be removed in favor of using
   // WasHidden/WasShown.
   virtual void SetWindowVisibility(bool visible) = 0;
 
   // Informs the view that its containing window's frame changed.
   virtual void WindowFrameChanged() = 0;
+
+  // Returns |true| if Mac OS X text to speech is supported.
+  virtual bool SupportsSpeech() const = 0;
+  // Tells the view to speak the currently selected text.
+  virtual void SpeakSelection() = 0;
+  // Returns |true| if text is currently being spoken by Mac OS X.
+  virtual bool IsSpeaking() const = 0;
+  // Stops speaking, if it is currently in progress.
+  virtual void StopSpeaking() = 0;
 #endif  // defined(OS_MACOSX)
 
 #if defined(TOOLKIT_GTK)
   // Gets the event for the last mouse down.
   virtual GdkEventButton* GetLastMouseDown() = 0;
   // Builds a submenu containing all the gtk input method commands.
   virtual gfx::NativeView BuildInputMethodsGtkMenu() = 0;
 #endif  // defined(TOOLKIT_GTK)
 
 #if defined(OS_ANDROID)
@@ skipping 13 matching lines @@
   // Return value indicates whether the mouse is locked successfully or not.
   virtual bool LockMouse() = 0;
   virtual void UnlockMouse() = 0;
   // Returns true if the mouse pointer is currently locked.
   virtual bool IsMouseLocked() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_H_