Refactor viewport initialization logic out of WebViewImpl.

Source/WebKit/chromium/public/WebView.h

 /*
  * Copyright (C) 2009, 2010, 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 215 matching lines @@
     WEBKIT_EXPORT static double zoomFactorToZoomLevel(double factor);
 
     // Sets the initial page scale to the given factor. This scale setting overrides
     // page scale set in the page's viewport meta tag.
     virtual void setInitialPageScaleOverride(float) = 0;
 
     // Gets the scale factor of the page, where 1.0 is the normal size, > 1.0
     // is scaled up, < 1.0 is scaled down.
     virtual float pageScaleFactor() const = 0;
 
-    // Indicates whether the page scale factor has been set since navigating
-    // to a new page.
-    virtual bool isPageScaleFactorSet() const = 0;
-
     // Scales the page and the scroll offset by a given factor, while ensuring
     // that the new scroll position does not go beyond the edge of the page.
     virtual void setPageScaleFactorPreservingScrollOffset(float) = 0;
 
     // Scales a page by a factor of scaleFactor and then sets a scroll position to (x, y).
     // setPageScaleFactor() magnifies and shrinks a page without affecting layout.
     // On the other hand, zooming affects layout of the page.
     virtual void setPageScaleFactor(float scaleFactor, const WebPoint& origin) = 0;
 
     // PageScaleFactor will be force-clamped between minPageScale and maxPageScale
     // (and these values will persist until setPageScaleFactorLimits is called
     // again).
     virtual void setPageScaleFactorLimits(float minPageScale, float maxPageScale) = 0;
 
     virtual float minimumPageScaleFactor() const = 0;
     virtual float maximumPageScaleFactor() const = 0;
 
     // Save the WebView's current scroll and scale state. Each call to this function
     // overwrites the previously saved scroll and scale state.
     virtual void saveScrollAndScaleState() = 0;
 
     // Restore the previously saved scroll and scale state. After restoring the
     // state, this function deletes any saved scroll and scale state.
     virtual void restoreScrollAndScaleState() = 0;
 
     // Reset any saved values for the scroll and scale state.
     virtual void resetScrollAndScaleState() = 0;
 
-    // Prevent the web page from setting a maximum scale via the viewport meta
+    // Prevent the web page from setting min/max scale via the viewport meta
     // tag. This is an accessibility feature that lets folks zoom in to web
     // pages even if the web page tries to block scaling.
-    virtual void setIgnoreViewportTagMaximumScale(bool) = 0;
+    virtual void setIgnoreViewportTagScaleLimits(bool) = 0;
+
+    // FIXME(aelias): Delete this after Chromium switches to the other name.
+    void setIgnoreViewportTagMaximumScale(bool ignore) { setIgnoreViewportTagScaleLimits(ignore); }
 
     // The ratio of the current device's screen DPI to the target device's screen DPI.
     virtual float deviceScaleFactor() const = 0;
 
     // Sets the ratio as computed by computeViewportAttributes.
     virtual void setDeviceScaleFactor(float) = 0;
 
 
     // Fixed Layout --------------------------------------------------------
 
@@ skipping 220 matching lines @@
 
     // Testing functionality for TestRunner ---------------------------------
 
 protected:
     ~WebView() {}
 };
 
 } // namespace WebKit
 
 #endif