Remove unused includes from core/{editing,fileapi,history,html}

Source/core/html/canvas/CanvasRenderingContext2D.cpp

Index: Source/core/html/canvas/CanvasRenderingContext2D.cpp
diff --git a/Source/core/html/canvas/CanvasRenderingContext2D.cpp b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
index 3d4d3afda16ebac6a325a474b94281b2bc0b6ebe..7e42e2a5ecdebb94131c186dcd6c6145c5bb778c 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.cpp
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
@@ -34,7 +34,6 @@
 #include "core/html/canvas/CanvasRenderingContext2D.h"
 
 #include "CSSPropertyNames.h"
-#include "HTMLNames.h"
 #include "RuntimeEnabledFeatures.h"
 #include "core/css/CSSFontSelector.h"
 #include "core/css/CSSParser.h"
@@ -54,34 +53,25 @@
 #include "core/html/canvas/CanvasStyle.h"
 #include "core/html/canvas/DOMPath.h"
 #include "core/loader/cache/CachedImage.h"
-#include "core/page/Console.h"
-#include "core/page/Page.h"
-#include "core/page/Settings.h"
-#include "core/platform/FloatConversion.h"
 #include "core/platform/graphics/DrawLooper.h"
 #include "core/platform/graphics/FloatQuad.h"
 #include "core/platform/graphics/FontCache.h"
 #include "core/platform/graphics/GraphicsContextStateSaver.h"
 #include "core/platform/graphics/TextRun.h"
 #include "core/platform/graphics/transforms/AffineTransform.h"
-#include "core/rendering/RenderHTMLCanvas.h"
 #include "core/rendering/RenderLayer.h"
-#include "weborigin/KURL.h"
 #include "weborigin/SecurityOrigin.h"
 
-#include <wtf/CheckedArithmetic.h>
-#include <wtf/MathExtras.h>
-#include <wtf/OwnPtr.h>
-#include <wtf/text/StringBuilder.h>
-#include <wtf/Uint8ClampedArray.h>
-#include <wtf/UnusedParam.h>
+#include "wtf/CheckedArithmetic.h"
+#include "wtf/MathExtras.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/Uint8ClampedArray.h"
+#include "wtf/text/StringBuilder.h"
 
 using namespace std;
 
 namespace WebCore {
 
-using namespace HTMLNames;
-
 static const int defaultFontSize = 10;
 static const char* const defaultFontFamily = "sans-serif";
 static const char* const defaultFont = "10px sans-serif";