Image filters: Replace all use of tryAllocPixels() with createDevice().

src/effects/SkLightingImageFilter.cpp

Index: src/effects/SkLightingImageFilter.cpp
diff --git a/src/effects/SkLightingImageFilter.cpp b/src/effects/SkLightingImageFilter.cpp
index 199bb4d684f8e3ab842f1f44d22126e8b3f75197..bac83e537dc9ce9c8292743234ea036d56e18ad8 100644
--- a/src/effects/SkLightingImageFilter.cpp
+++ b/src/effects/SkLightingImageFilter.cpp
@@ -8,6 +8,7 @@
 #include "SkLightingImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
+#include "SkDevice.h"
 #include "SkPoint3.h"
 #include "SkReadBuffer.h"
 #include "SkTypes.h"
@@ -1190,9 +1191,12 @@ bool SkDiffuseLightingImageFilter::onFilterImage(Proxy* proxy,
         return false;
     }
 
-    if (!dst->tryAllocPixels(src.info().makeWH(bounds.width(), bounds.height()))) {
+    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
+    if (!device) {
         return false;
     }
+    *dst = device->accessBitmap(false);
+    SkAutoLockPixels alp_dst(*dst);
 
     SkMatrix matrix(ctx.ctm());
     matrix.postTranslate(SkIntToScalar(-srcOffset.x()), SkIntToScalar(-srcOffset.y()));
@@ -1331,9 +1335,12 @@ bool SkSpecularLightingImageFilter::onFilterImage(Proxy* proxy,
         return false;
     }
 
-    if (!dst->tryAllocPixels(src.info().makeWH(bounds.width(), bounds.height()))) {
+    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
+    if (!device) {
         return false;
     }
+    *dst = device->accessBitmap(false);
+    SkAutoLockPixels alp_dst(*dst);
 
     SpecularLightingType lightingType(fKS, fShininess);
     offset->fX = bounds.left();