Pre-allocate some opList dependency list storage

There is a perf regression (mainly on the Nexus5) for the https://skia-review.googlesource.com/c/skia/+/46200 (Add method to iterate over a GrOp's GrSurfaceProxies)

This is another candidate.

Change-Id: I276ea44d899166a7d2e74f461f5a6c2c17a21cde
Reviewed-on: https://skia-review.googlesource.com/46561
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

src/gpu/GrOpList.cpp

@@ -81,7 +81,7 @@ void GrOpList::addDependency(GrOpList* dependedOn) {
         return;  // don't add duplicate dependencies
     }
 
-    *fDependencies.push() = dependedOn;
+    fDependencies.push_back(dependedOn);
 }
 
 // Convert from a GrSurface-based dependency to a GrOpList one

src/gpu/GrOpList.h

@@ -77,7 +77,13 @@ public:
      * Does this opList depend on 'dependedOn'?
      */
     bool dependsOn(GrOpList* dependedOn) const {
-        return fDependencies.find(dependedOn) >= 0;
+        for (int i = 0; i < fDependencies.count(); ++i) {
+            if (fDependencies[i] == dependedOn) {
+                return true;
+            }
+        }
+
+        return false;
     }
 
     /*
@@ -169,11 +175,11 @@ private:
 
     void addDependency(GrOpList* dependedOn);
 
-    uint32_t              fUniqueID;
-    uint32_t              fFlags;
+    uint32_t               fUniqueID;
+    uint32_t               fFlags;
 
     // 'this' GrOpList relies on the output of the GrOpLists in 'fDependencies'
-    SkTDArray<GrOpList*>  fDependencies;
+    SkSTArray<1, GrOpList*, true> fDependencies;
 
     // These are used rarely, most clients never produce any
     SkTArray<std::unique_ptr<GrPrepareCallback>> fPrepareCallbacks;