Revert of Make copySurface work for texture dsts, return a bool, & add unit test. (patchset #6 id:100001 of https://codereview.chromium.org/1684313002/ )

Reason for revert:
Copy surface tests are not happy for Windows, Android and probably others:
https://uberchromegw.corp.google.com/i/client.skia.android/builders/Test-Android-GCC-Nexus7-GPU-Tegra3-Arm7-Release/builds/4161
https://uberchromegw.corp.google.com/i/client.skia/builders/Test-Win8-MSVC-ShuttleA-GPU-GTX960-x86_64-Release/builds/3694

Original issue's description:
> Make copySurface work for texture dsts, return a bool, & add unit test.
> GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1684313002
>
> Committed: https://skia.googlesource.com/skia/+/7ea5e28065e5eb797e95f5d81c1a65cf3209d741

TBR=robertphillips@google.com,bsalomon@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1690053002
diff --git a/src/gpu/batches/GrCopySurfaceBatch.cpp b/src/gpu/batches/GrCopySurfaceBatch.cpp
index a59ed38..098f7c7 100644
--- a/src/gpu/batches/GrCopySurfaceBatch.cpp
+++ b/src/gpu/batches/GrCopySurfaceBatch.cpp
@@ -9,12 +9,12 @@
 #include "GrCopySurfaceBatch.h"
 
 // returns true if the read/written rect intersects the src/dst and false if not.
-bool GrCopySurfaceBatch::ClipSrcRectAndDstPoint(const GrSurface* dst,
-                                                const GrSurface* src,
-                                                const SkIRect& srcRect,
-                                                const SkIPoint& dstPoint,
-                                                SkIRect* clippedSrcRect,
-                                                SkIPoint* clippedDstPoint) {
+static bool clip_srcrect_and_dstpoint(const GrSurface* dst,
+                                      const GrSurface* src,
+                                      const SkIRect& srcRect,
+                                      const SkIPoint& dstPoint,
+                                      SkIRect* clippedSrcRect,
+                                      SkIPoint* clippedDstPoint) {
     *clippedSrcRect = srcRect;
     *clippedDstPoint = dstPoint;
 
@@ -67,7 +67,12 @@
     SkIRect clippedSrcRect;
     SkIPoint clippedDstPoint;
     // If the rect is outside the src or dst then we've already succeeded.
-    if (!ClipSrcRectAndDstPoint(dst, src, srcRect, dstPoint, &clippedSrcRect, &clippedDstPoint)) {
+    if (!clip_srcrect_and_dstpoint(dst,
+                                    src,
+                                    srcRect,
+                                    dstPoint,
+                                    &clippedSrcRect,
+                                    &clippedDstPoint)) {
         return nullptr;
     }
     return new GrCopySurfaceBatch(dst, src, clippedSrcRect, clippedDstPoint);