Remove unnecessary 'const's

Noticed here https://codereview.chromium.org/538333002/ .
Something's wrong between gn/gyp because this doesn't happen
in gyp, but remove these consts anyway as they're unnecessary.

R=thakis@chromium.org
BUG=335824

Review URL: https://codereview.chromium.org/551863004

git-svn-id: svn://svn.chromium.org/blink/trunk@181584 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/platform/graphics/GraphicsContext.cpp

@@ -1901,7 +1901,7 @@ void GraphicsContext::draw1xMarker(SkBitmap* bitmap, int index)
     }
 }
 
-const SkPMColor GraphicsContext::lineColors(int index)
+SkPMColor GraphicsContext::lineColors(int index)
 {
     static const SkPMColor colors[] = {
         SkPreMultiplyARGB(0xFF, 0xFF, 0x00, 0x00), // Opaque red.
@@ -1911,7 +1911,7 @@ const SkPMColor GraphicsContext::lineColors(int index)
     return colors[index];
 }
 
-const SkPMColor GraphicsContext::antiColors1(int index)
+SkPMColor GraphicsContext::antiColors1(int index)
 {
     static const SkPMColor colors[] = {
         SkPreMultiplyARGB(0xB0, 0xFF, 0x00, 0x00), // Semitransparent red.
@@ -1921,7 +1921,7 @@ const SkPMColor GraphicsContext::antiColors1(int index)
     return colors[index];
 }
 
-const SkPMColor GraphicsContext::antiColors2(int index)
+SkPMColor GraphicsContext::antiColors2(int index)
 {
     static const SkPMColor colors[] = {
         SkPreMultiplyARGB(0x60, 0xFF, 0x00, 0x00), // More transparent red

third_party/WebKit/Source/platform/graphics/GraphicsContext.h

@@ -436,9 +436,9 @@ private:
 #else
     static inline int focusRingOutset(int offset) { return 0; }
     static inline int focusRingWidth(int width) { return 1; }
-    static const SkPMColor lineColors(int);
-    static const SkPMColor antiColors1(int);
-    static const SkPMColor antiColors2(int);
+    static SkPMColor lineColors(int);
+    static SkPMColor antiColors1(int);
+    static SkPMColor antiColors2(int);
     static void draw1xMarker(SkBitmap*, int);
     static void draw2xMarker(SkBitmap*, int);
 #endif