[Android] Modify CreateJavaBitmap to accept SkBitmap::Config and export the API.

ui/gfx/android/java_bitmap.h

Index: ui/gfx/android/java_bitmap.h
diff --git a/ui/gfx/android/java_bitmap.h b/ui/gfx/android/java_bitmap.h
index cb1077d73e2ca49f6c8af26c8a107bda67398d6c..5cda137a1eef9ca5c2944b2929a97f9af2f14e29 100644
--- a/ui/gfx/android/java_bitmap.h
+++ b/ui/gfx/android/java_bitmap.h
@@ -49,6 +49,13 @@ class GFX_EXPORT JavaBitmap {
   DISALLOW_COPY_AND_ASSIGN(JavaBitmap);
 };
 
+// Allocates a Java-backed bitmap (android.graphics.Bitmap) with the given size
+// and configuration.
+GFX_EXPORT base::android::ScopedJavaLocalRef<jobject> CreateJavaBitmap(
+    int width,
+    int height,
+    SkBitmap::Config bitmap_config);
+
 GFX_EXPORT base::android::ScopedJavaLocalRef<jobject> ConvertToJavaBitmap(
     const SkBitmap* skbitmap);