Removing the dependency on GraphicsContext for drawing images in 2D canvas

Source/platform/graphics/GraphicsContextState.cpp

Index: Source/platform/graphics/GraphicsContextState.cpp
diff --git a/Source/platform/graphics/GraphicsContextState.cpp b/Source/platform/graphics/GraphicsContextState.cpp
index 02ba5f1d43b6f848a666e903efa16864753e143b..512a6c3d65c0852fea13e548596187f2bb4f4336 100644
--- a/Source/platform/graphics/GraphicsContextState.cpp
+++ b/Source/platform/graphics/GraphicsContextState.cpp
@@ -17,7 +17,6 @@ GraphicsContextState::GraphicsContextState()
     , m_interpolationQuality(InterpolationDefault)
     , m_saveCount(0)
     , m_shouldAntialias(true)
-    , m_shouldClampToSourceRect(true)
 {
     m_strokePaint.setStyle(SkPaint::kStroke_Style);
     m_strokePaint.setStrokeWidth(SkFloatToScalar(m_strokeData.thickness()));
@@ -44,15 +43,13 @@ GraphicsContextState::GraphicsContextState(const GraphicsContextState& other)
     , m_fillGradient(other.m_fillGradient)
     , m_fillPattern(other.m_fillPattern)
     , m_looper(other.m_looper)
-    , m_dropShadowImageFilter(other.m_dropShadowImageFilter)
     , m_textDrawingMode(other.m_textDrawingMode)
     , m_alpha(other.m_alpha)
     , m_colorFilter(other.m_colorFilter)
     , m_compositeOperation(other.m_compositeOperation)
     , m_interpolationQuality(other.m_interpolationQuality)
     , m_saveCount(0)
-    , m_shouldAntialias(other.m_shouldAntialias)
-    , m_shouldClampToSourceRect(other.m_shouldClampToSourceRect) { }
+    , m_shouldAntialias(other.m_shouldAntialias) { }
 
 void GraphicsContextState::copy(const GraphicsContextState& source)
 {
@@ -173,23 +170,6 @@ void GraphicsContextState::clearDrawLooper()
     m_fillPaint.setLooper(0);
 }
 
-void GraphicsContextState::setDropShadowImageFilter(PassRefPtr<SkImageFilter> dropShadowImageFilter)
-{
-    m_dropShadowImageFilter = dropShadowImageFilter;
-}
-
-void GraphicsContextState::clearDropShadowImageFilter()
-{
-    m_dropShadowImageFilter.clear();
-}
-
-void GraphicsContextState::setAlphaAsFloat(float alpha)
-{
-    m_alpha = clampedAlphaForBlending(alpha);
-    m_strokePaint.setColor(applyAlpha(m_strokeColor.rgb()));
-    m_fillPaint.setColor(applyAlpha(m_fillColor.rgb()));
-}
-
 void GraphicsContextState::setLineDash(const DashArray& dashes, float dashOffset)
 {
     m_strokeData.setLineDash(dashes, dashOffset);