[NaCl SDK] Add pepper_44 version of the NaCl SDK

R=binji@chromium.org

Review URL: https://codereview.chromium.org/1142713009

Cr-Commit-Position: refs/heads/master@{#330770}

native_client_sdk/src/build_tools/json/naclsdk_manifest2.json

@@ -33,16 +33,6 @@
       "stability": "dev",
       "version": 0
     },
-    {
-      "archives": [],
-      "description": "Chrome 37 bundle, revision xxxxx",
-      "name": "pepper_37",
-      "recommended": "no",
-      "repath": "pepper_37",
-      "revision": 0,
-      "stability": "post_stable",
-      "version": 37
-    },
     {
       "archives": [],
       "description": "Chrome 38 bundle, revision xxxxx",
@@ -103,6 +93,16 @@
       "stability": "post_stable",
       "version": 43
     },
+    {
+      "archives": [],
+      "description": "Chrome 44 bundle, revision xxxxx",
+      "name": "pepper_44",
+      "recommended": "no",
+      "repath": "pepper_44",
+      "revision": 0,
+      "stability": "post_stable",
+      "version": 44
+    },
     {
       "archives": [],
       "description": "Chrome Canary",