Fix distorted image issue when open some images in a new browser window.

Source/core/fetch/ImageResource.cpp

Index: Source/core/fetch/ImageResource.cpp
diff --git a/Source/core/fetch/ImageResource.cpp b/Source/core/fetch/ImageResource.cpp
index be73b8411561c903ef2be9f6350a61a1f6188fc0..9c07e4a1fc4818d7f7c6c1984b4ad07cadab523a 100644
--- a/Source/core/fetch/ImageResource.cpp
+++ b/Source/core/fetch/ImageResource.cpp
@@ -241,6 +241,32 @@ bool ImageResource::imageHasRelativeHeight() const
     return false;
 }
 
+void ImageResource::applyMultiplier(LayoutSize& imageSize, float multiplier) const
+{
+    if (multiplier == 1.0f)
+        return;
+
+    // Don't let images that have a width/height >= 1 shrink below 1 when zoomed.
+    float widthScale = m_image->hasRelativeWidth() ? 1.0f : multiplier;
+    float heightScale = m_image->hasRelativeHeight() ? 1.0f : multiplier;
+    LayoutSize minimumSize(imageSize.width() > 0 ? 1 : 0, imageSize.height() > 0 ? 1 : 0);
+    imageSize.scale(widthScale, heightScale);
+    imageSize.clampToMinimumSize(minimumSize);
+    ASSERT(multiplier != 1.0f || (imageSize.width().fraction() == 0.0f && imageSize.height().fraction() == 0.0f));
+}
+
+LayoutSize ImageResource::bitmapImageSizeRespectingOrientation(float multiplier) const
+{
+    ASSERT(!isPurgeable());
+
+    if (!m_image || !m_image->isBitmapImage())
+        return IntSize();

[abarth-chromium, 2014/02/15 18:58:33]

So, this won't work for SVG images?  Should this be an ASSERT so indicate that
it's an error to call this function for non-bitmap images?

+
+    LayoutSize imageSize = toBitmapImage(m_image.get())->sizeRespectingOrientation();
+    applyMultiplier(imageSize, multiplier);
+    return imageSize;
+}
+
 LayoutSize ImageResource::imageSizeForRenderer(const RenderObject* renderer, float multiplier, SizeType sizeType)
 {
     ASSERT(!isPurgeable());
@@ -257,16 +283,7 @@ LayoutSize ImageResource::imageSizeForRenderer(const RenderObject* renderer, flo
     else
         imageSize = m_image->size();
 
-    if (multiplier == 1.0f)
-        return imageSize;
-
-    // Don't let images that have a width/height >= 1 shrink below 1 when zoomed.
-    float widthScale = m_image->hasRelativeWidth() ? 1.0f : multiplier;
-    float heightScale = m_image->hasRelativeHeight() ? 1.0f : multiplier;
-    LayoutSize minimumSize(imageSize.width() > 0 ? 1 : 0, imageSize.height() > 0 ? 1 : 0);
-    imageSize.scale(widthScale, heightScale);
-    imageSize.clampToMinimumSize(minimumSize);
-    ASSERT(multiplier != 1.0f || (imageSize.width().fraction() == 0.0f && imageSize.height().fraction() == 0.0f));
+    applyMultiplier(imageSize, multiplier);
     return imageSize;
 }