[NaCl SDK] Add pepper_43 bundle, remove 35 and 36.

BUG=none
R=bradnelson@chromium.org

Review URL: https://codereview.chromium.org/1016193002

Cr-Commit-Position: refs/heads/master@{#323975}

native_client_sdk/src/build_tools/json/naclsdk_manifest2.json

@@ -33,26 +33,6 @@
       "stability": "dev",
       "version": 0
     },
-    {
-      "archives": [],
-      "description": "Chrome 35 bundle, revision xxxxx",
-      "name": "pepper_35",
-      "recommended": "no",
-      "repath": "pepper_35",
-      "revision": 0,
-      "stability": "post_stable",
-      "version": 35
-    },
-    {
-      "archives": [],
-      "description": "Chrome 36 bundle, revision xxxxx",
-      "name": "pepper_36",
-      "recommended": "no",
-      "repath": "pepper_36",
-      "revision": 0,
-      "stability": "post_stable",
-      "version": 36
-    },
     {
       "archives": [],
       "description": "Chrome 37 bundle, revision xxxxx",
@@ -113,6 +93,16 @@
       "stability": "post_stable",
       "version": 42
     },
+    {
+      "archives": [],
+      "description": "Chrome 43 bundle, revision xxxxx",
+      "name": "pepper_43",
+      "recommended": "no",
+      "repath": "pepper_43",
+      "revision": 0,
+      "stability": "post_stable",
+      "version": 43
+    },
     {
       "archives": [],
       "description": "Chrome Canary",