Move RefCountedMemory class to base namespace.

ui/gfx/color_analysis.cc

Index: ui/gfx/color_analysis.cc
===================================================================
--- ui/gfx/color_analysis.cc	(revision 134496)
+++ ui/gfx/color_analysis.cc	(working copy)
@@ -157,12 +157,12 @@
 }
 
 SkColor CalculateRecommendedBgColorForPNG(
-    scoped_refptr<RefCountedMemory> png) {
+    scoped_refptr<base::RefCountedMemory> png) {
   RandomSampler sampler;
   return CalculateRecommendedBgColorForPNG(png, sampler);
 }
 
-SkColor CalculateKMeanColorOfPNG(scoped_refptr<RefCountedMemory> png,
+SkColor CalculateKMeanColorOfPNG(scoped_refptr<base::RefCountedMemory> png,
                                  uint32_t darkness_limit,
                                  uint32_t brightness_limit) {
   RandomSampler sampler;
@@ -171,7 +171,7 @@
 }
 
 SkColor CalculateRecommendedBgColorForPNG(
-    scoped_refptr<RefCountedMemory> png,
+    scoped_refptr<base::RefCountedMemory> png,
     KMeanImageSampler& sampler) {
   return CalculateKMeanColorOfPNG(png,
                                   kMinDarkness,
@@ -179,7 +179,7 @@
                                   sampler);
 }
 
-SkColor CalculateKMeanColorOfPNG(scoped_refptr<RefCountedMemory> png,
+SkColor CalculateKMeanColorOfPNG(scoped_refptr<base::RefCountedMemory> png,
                                  uint32_t darkness_limit,
                                  uint32_t brightness_limit,
                                  KMeanImageSampler& sampler) {