[DevTools] Pass inspected page bounds from frontend.

chrome/browser/devtools/devtools_contents_resizing_strategy.h

 // Copyright 2014 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 CHROME_BROWSER_DEVTOOLS_DEVTOOLS_CONTENTS_RESIZING_STRATEGY_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_CONTENTS_RESIZING_STRATEGY_H_
 
 #include "base/basictypes.h"
 #include "ui/gfx/insets.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/size.h"
 
 // This class knows how to resize both DevTools and inspected WebContents
 // inside a browser window hierarchy.
 class DevToolsContentsResizingStrategy {
  public:
   DevToolsContentsResizingStrategy();
   DevToolsContentsResizingStrategy(
       const gfx::Insets& insets,
       const gfx::Size& min_size);
+  explicit DevToolsContentsResizingStrategy(const gfx::Rect& bounds);
 
   void CopyFrom(const DevToolsContentsResizingStrategy& strategy);
   bool Equals(const DevToolsContentsResizingStrategy& strategy);
 
   const gfx::Insets& insets() const { return insets_; }
   const gfx::Size& min_size() const { return min_size_; }
+  const gfx::Rect& bounds() const { return bounds_; }
 
  private:
   // Insets of contents inside DevTools.
   gfx::Insets insets_;
 
   // Minimum size of contents.
   gfx::Size min_size_;
 
+  // Contents bounds. When non-empty, used instead of insets.
+  gfx::Rect bounds_;
+
   DISALLOW_COPY_AND_ASSIGN(DevToolsContentsResizingStrategy);
 };
 
 // Applies contents resizing strategy, producing bounds for devtools and
 // page contents views. Generally, page contents view is placed atop of devtools
 // inside a common parent view, which size should be passed in |container_size|.
 // When unknown, providing empty rect as previous devtools and contents bounds
 // is allowed.
 void ApplyDevToolsContentsResizingStrategy(
     const DevToolsContentsResizingStrategy& strategy,
     const gfx::Size& container_size,
     const gfx::Rect& old_devtools_bounds,
     const gfx::Rect& old_contents_bounds,
     gfx::Rect* new_devtools_bounds,
     gfx::Rect* new_contents_bounds);
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_CONTENTS_RESIZING_STRATEGY_H_